Competition Law and Attention Markets

1. Introduction

Attention markets refer to markets in which businesses compete to obtain, retain, and monetize the limited attention of consumers or users. In digital economies, attention has become an economically valuable resource because consumers have limited time and cognitive capacity, while platforms can supply an enormous quantity of information, entertainment, advertising, products, and services.

Examples include:

search engines;

social-media platforms;

video-sharing services;

online marketplaces;

news platforms;

streaming services;

app stores;

digital advertising;

recommendation systems;

AI assistants; and

online gaming platforms.

Competition law becomes particularly important where a powerful undertaking controls access to consumer attention and can use that position to exclude competitors, favour its own products, raise rivals' costs, or otherwise distort competitive conditions.

Attention markets therefore sit at the intersection of market power, platform economics, digital advertising, data, algorithms, self-preferencing, network effects and consumer choice.

2. What Is an Attention Market?

Attention is scarce because an individual consumer has only a limited amount of:

time;

concentration;

viewing capacity;

purchasing capacity; and

willingness to process information.

Platforms compete to capture this attention.

For example:

Consumer time → social-media platform → advertising revenue

or:

Consumer search → search engine → commercial results → advertiser revenue

or:

Consumer browsing → marketplace → seller exposure → transaction

The economic value of attention arises because businesses can convert consumer attention into:

advertising revenue;

sales;

subscriptions;

commissions;

data;

engagement; and

future customer relationships.

3. Attention as an Economic Resource

Traditional competition law often focuses on prices.

Attention markets complicate this because many services are offered at zero monetary price.

For example, users may receive:

search services;

social-media services;

video services;

email;

mapping;

AI assistance

without paying money.

The platform may instead monetize attention through advertising and data.

Consequently:

Zero monetary price does not necessarily mean zero economic value.

Competition analysis may therefore need to examine non-price dimensions such as:

quality;

privacy;

advertising intensity;

recommendation quality;

innovation;

user experience; and

data collection.

4. Two-Sided and Multi-Sided Attention Markets

Many attention markets are multi-sided markets.

A social-media platform may simultaneously serve:

users;

advertisers;

content creators.

A search engine may connect:

users;

advertisers;

publishers;

businesses.

A marketplace may connect:

consumers;

sellers;

advertisers.

Competition on one side may therefore affect competition on another.

For example:

More users → more attention → more advertisers → more advertising revenue → greater ability to invest in the platform → more users.

This feedback mechanism can reinforce incumbent market power.

5. Network Effects

Network effects are particularly important.

A platform may become more attractive as its user base grows.

This can produce:

More users → more content → more engagement → more users.

For advertisers:

More users → more attention → more advertising value → more advertisers → greater platform revenue.

Network effects can create substantial barriers to entry.

However, network effects are not inherently anticompetitive.

They become competition-law relevant when a dominant undertaking uses them in combination with exclusionary practices to prevent effective competition.

6. Relevant Market Definition

Competition authorities must determine the relevant market.

Potential markets include:

general search services;

social-network services;

online video services;

digital advertising;

online marketplaces;

app distribution;

news aggregation;

music streaming;

AI-assistant services.

The appropriate market depends upon the particular facts.

An attention platform may participate simultaneously in several related markets.

7. Zero-Price Markets

One of the distinctive characteristics of attention markets is the prevalence of zero-price services.

Traditional market-share analysis based on sales value can therefore become less informative.

Authorities may examine:

number of users;

engagement;

time spent;

frequency of use;

advertising revenue;

data;

switching costs;

network effects;

quality;

innovation.

The fact that users pay nothing does not eliminate competition-law concerns.

8. Data and Attention

Data is closely connected to attention markets.

A platform can collect:

search queries;

clicks;

viewing history;

purchases;

interactions;

location;

demographic information;

interests.

This information can improve:

targeting;

recommendations;

advertising;

personalization.

The resulting cycle can be:

Attention → data → better targeting → higher advertising value → greater revenue → stronger platform → more attention.

This can contribute to market concentration.

9. Advertising as the Monetization Mechanism

Many attention markets operate through advertising.

The platform provides consumers with a service and sells advertisers access to consumer attention.

The economic structure may therefore be:

Consumers → attention → platform → advertisers

Competition issues can arise where the platform controls:

advertising inventory;

ad auctions;

consumer data;

advertiser access;

measurement;

ad placement.

A vertically integrated platform may have incentives to favour its own advertising services or disadvantage rival advertising intermediaries.

10. Self-Preferencing

Self-preferencing occurs where a platform favours its own products or services over competing products.

Examples include:

search results favouring the platform's own service;

marketplace rankings favouring its own products;

app stores promoting affiliated applications;

recommendation systems promoting affiliated content.

The practice is particularly significant in attention markets because visibility itself can be a competitive resource.

A rival may remain technically available but become commercially ineffective if consumers rarely encounter it.

11. Case Law: Google Shopping

Google and Alphabet v Commission — Case T-612/17

This is one of the most important cases for attention-market analysis.

The European Commission found that Google favoured its own comparison-shopping service in general search results and disadvantaged competing comparison-shopping services.

The General Court substantially upheld the Commission's decision.

Importance

The case demonstrates that:

Control over search → control over visibility → competitive advantage

can have competition-law significance.

The relevant competitive resource was not simply search access but prominence and consumer attention within search results.

12. Case Law: Google Android

Google and Alphabet v Commission — Case T-604/18

The Android case concerned Google's practices relating to its mobile ecosystem, including arrangements involving search, browsers and application distribution.

Relevance to attention markets

Mobile devices are important gateways to consumer attention.

Default settings and pre-installation can influence:

which search engine users employ;

which applications they discover;

which services receive usage;

which advertising ecosystem benefits.

The case illustrates how control over one layer of a digital ecosystem can influence competitive conditions in another.

13. Case Law: Microsoft

Microsoft v Commission — Case T-201/04

Microsoft concerned interoperability and tying involving Windows and Windows Media Player.

The case is important because it illustrates how control over a technological platform can be leveraged into related markets.

Relevance

In an attention economy, a dominant platform may similarly control:

operating systems;

browsers;

application distribution;

defaults;

interfaces.

Control over these layers can influence which services receive consumer attention.

14. Case Law: Bronner

Oscar Bronner GmbH v Mediaprint — Case C-7/97

Bronner concerned access to a newspaper home-delivery system.

The Court adopted a demanding approach to compulsory access to infrastructure.

Attention-market significance

The case is useful because it prevents competition law from assuming that every important route to consumers must automatically be made available to competitors.

A platform does not necessarily have to provide competitors with access to its audience merely because that audience is commercially valuable.

Compulsory access generally requires the demanding conditions established in the refusal-to-deal jurisprudence.

15. Case Law: Commercial Solvents

Commercial Solvents v Commission — Joined Cases 6/73 and 7/73

Commercial Solvents established important principles concerning a dominant undertaking's refusal to supply an input to a downstream competitor.

Relevance

An attention platform can sometimes operate as an upstream infrastructure provider and downstream competitor.

For example:

Platform → advertising access → competing business

If a dominant platform controls an important input and uses that control to eliminate downstream competition, the principles from Commercial Solvents may become relevant.

16. Case Law: United Brands

United Brands v Commission — Case 27/76

United Brands is a foundational Article 102 case concerning dominance and abusive conduct.

Relevance

Attention platforms can create commercial dependence.

Businesses may depend upon:

search traffic;

advertising exposure;

marketplace traffic;

recommendation systems;

social-media visibility.

The case illustrates the importance of assessing the economic realities of dependence rather than focusing solely on formal contractual relationships.

17. Case Law: Hoffmann-La Roche

Hoffmann-La Roche v Commission — Case 85/76

Hoffmann-La Roche is a leading authority on exclusionary conduct by dominant undertakings.

Relevance

In attention markets, a dominant platform could potentially employ:

exclusive arrangements;

loyalty incentives;

preferential access;

contractual restrictions.

If such mechanisms materially foreclose rivals, the principles of Hoffmann-La Roche may become relevant.

18. Case Law: Intel

Intel v Commission — Case C-413/14 P

Intel concerned exclusivity-inducing rebates and their potential foreclosure effects.

Relevance

In attention markets, economic incentives can influence where businesses advertise and distribute products.

A dominant platform might provide:

discounts;

advertising credits;

preferential rates;

promotional placement

in exchange for exclusive or loyalty-inducing commitments.

The Intel judgment emphasizes the importance of examining whether the arrangement is capable of restricting competition.

19. Attention Allocation and Consumer Choice

Competition in attention markets can affect consumer choice in several ways.

Suppose a platform controls recommendations.

It can influence:

which products consumers discover;

which news they read;

which videos they watch;

which applications they download;

which sellers they purchase from.

This does not mean recommendation algorithms are inherently anticompetitive.

Algorithms can provide legitimate benefits through:

personalization;

relevance;

fraud detection;

quality control;

improved consumer experience.

The competition-law question is whether a dominant platform uses the system to unfairly restrict competitive opportunities.

20. Algorithmic Ranking

Algorithms can determine the allocation of consumer attention.

Potentially relevant factors include:

ranking criteria;

recommendation criteria;

default settings;

sponsored placement;

personalization;

demotion mechanisms.

Competition authorities may investigate whether algorithms:

favour affiliated services;

discriminate against rivals;

impose exclusionary conditions;

increase switching costs;

reduce discoverability of competing products.

21. Attention Markets and Entry Barriers

A new business may develop an innovative product but still struggle to enter because it cannot obtain sufficient attention.

The competitive chain may be:

New entrant → limited visibility → insufficient users → insufficient revenue → inability to scale → exit

An incumbent may therefore possess a competitive advantage not because competitors lack good products, but because the incumbent controls access to consumers.

This can create an important distinction between:

product-market competition

and

competition for consumer attention.

22. Attention Markets and Exclusivity

Exclusive agreements can potentially restrict access to consumers.

For example, a dominant platform could require:

advertisers to use only its advertising system;

sellers to avoid rival marketplaces;

creators to distribute content exclusively;

businesses to use its payment system.

Exclusivity can produce legitimate efficiencies.

However, where imposed by a dominant undertaking and capable of foreclosing rivals, Article 101 or Article 102 principles may become relevant depending upon the arrangement.

23. Attention Markets and Digital Advertising

Digital advertising is particularly important because attention is directly monetized.

A platform may control:

user data;

advertising inventory;

advertiser relationships;

advertising auctions;

ad measurement.

This creates possible conflicts of interest.

For example:

Platform operates advertising exchange + owns publisher network + controls advertiser access

could create incentives to favour its own services.

Competition authorities may therefore investigate:

discriminatory auction rules;

preferential access;

self-preferencing;

data advantages;

tying;

exclusionary contracts.

24. Attention Markets and App Stores

App stores are important attention intermediaries.

An application developer may depend upon:

search ranking;

recommendations;

editorial featuring;

default placement;

user reviews;

advertising.

The platform can therefore determine whether users discover competing applications.

Potential competition issues include:

discriminatory ranking;

self-preferencing;

excessive access conditions;

anti-steering restrictions;

tying;

exclusionary contracts.

25. Attention Markets and Social Media

Social-media platforms compete for attention through:

feeds;

short videos;

recommendations;

notifications;

personalized content.

Competition can occur between platforms as well as among creators and businesses within a platform.

Potential concerns include:

preferential treatment of affiliated content;

exclusion of competing platforms;

interoperability restrictions;

data advantages;

switching costs.

26. Attention Markets and AI

AI assistants may significantly change attention markets.

Traditionally:

User → search engine → multiple results

Potentially:

User → AI assistant → one or several selected answers

The AI system may therefore become an important information and commercial attention intermediary.

If an AI provider also operates competing products, competition questions could include:

preferential recommendations;

self-preferencing;

suppression of rival services;

discriminatory access to APIs;

exclusive distribution;

control over commercial referrals.

27. Attention Markets and Consumer Harm

Potential harms can include:

Reduced choice

Consumers may encounter fewer alternatives.

Higher prices

Reduced competitive pressure can potentially facilitate higher prices.

Lower quality

Platforms may face weaker competitive incentives to improve services.

Reduced innovation

Startups may struggle to acquire customers.

Increased advertising burden

A lack of competitive pressure may allow greater advertising intensity.

Privacy deterioration

Consumers may have fewer alternatives offering stronger privacy protections.

These effects must be established factually rather than assumed.

28. Attention Markets and Non-Price Competition

Competition law traditionally pays substantial attention to price.

Attention markets require a broader approach.

Relevant competitive variables can include:

quality;

privacy;

speed;

personalization;

advertising intensity;

content diversity;

interoperability;

innovation.

A platform can therefore cause competitive harm even where the monetary price to consumers remains zero.

29. Attention Markets and Market Power

Indicators of market power can include:

user share;

time spent;

engagement;

advertising revenue;

data holdings;

network effects;

switching costs;

entry barriers;

control of distribution;

advertiser dependence.

No single factor necessarily establishes dominance.

The assessment should consider the competitive structure as a whole.

30. Relevant Competition-Law Doctrines

Attention-market cases may involve several established doctrines.

Article 101 TFEU

Relevant where competing undertakings coordinate through:

agreements;

concerted practices;

information exchanges;

restrictive contractual arrangements.

Article 102 TFEU

Relevant where a dominant undertaking engages in:

self-preferencing;

tying;

exclusive dealing;

discriminatory access;

refusal to supply;

margin squeeze;

exclusionary rebates.

Merger control

Relevant where acquisitions eliminate:

emerging competitors;

innovative startups;

important sources of future competition.

31. Attention as an Essential Input

The concept of an "essential facility" should be applied carefully.

A platform's audience may be commercially important without legally qualifying as an indispensable facility.

The Bronner standard demonstrates that compulsory access is exceptional.

Therefore:

Commercial importance ≠ automatic legal indispensability.

This distinction is critical when analyzing attention markets.

32. Objective Justifications

A platform may legitimately prioritize content or services for reasons such as:

relevance;

safety;

fraud prevention;

technical compatibility;

quality;

privacy;

cybersecurity.

Competition law should not require platforms to abandon legitimate product design merely because ranking affects competitors.

The relevant inquiry is whether the conduct is objectively justified and proportionate.

33. Remedies

Where unlawful conduct is established, potential remedies include:

Behavioural remedies

non-discrimination;

interoperability;

transparency;

restrictions on self-preferencing;

access obligations;

data portability.

Structural remedies

In exceptional circumstances:

functional separation;

business separation;

divestiture.

Merger remedies

Authorities may require:

asset divestiture;

licensing;

interoperability;

access commitments.

34. Case-Law Synthesis

35. Practical Analytical Model

An attention-market competition investigation can follow this sequence:

1. Identify the attention ecosystem

Who connects consumers with businesses?

↓

2. Define the relevant market

What services are consumers actually substituting between?

↓

3. Assess market power

Examine users, engagement, data, network effects, switching costs and entry barriers.

↓

4. Identify the control mechanism

Search, ranking, recommendation, advertising, app distribution, etc.

↓

5. Examine conduct

Self-preferencing, tying, exclusivity, discrimination, refusal to deal or other practices.

↓

6. Examine foreclosure

Are competing businesses realistically prevented from reaching consumers?

↓

7. Examine consumer effects

Price, quality, innovation, choice, privacy and advertising intensity.

↓

8. Consider objective justification

Does the platform have legitimate technological or commercial reasons?

↓

9. Select proportionate remedies

Behavioural, structural or regulatory.

36. Conclusion

Attention markets represent an important dimension of modern competition law because consumer attention is scarce, commercially valuable and increasingly mediated by digital platforms.

The central competition problem arises where a platform controls access to substantial consumer attention and uses that position to:

favour its own products;

exclude competing services;

impose exclusivity;

manipulate rankings;

restrict interoperability;

exploit data advantages;

raise rivals' costs; or

reinforce barriers to entry.

The Google Shopping decision is particularly significant because it demonstrates how control over digital visibility can have direct competitive consequences. Google Android, Microsoft, Bronner, Commercial Solvents, United Brands, Hoffmann-La Roche and Intel provide complementary principles concerning ecosystem control, access, tying, exclusion and foreclosure.

The central analytical distinction is therefore between ordinary competition for consumer attention—which is a normal feature of digital markets—and the use of substantial market power to distort the mechanisms through which competitors obtain that attention.