Social Media Mergers and Acquisitions Review

Introduction

Mergers and acquisitions in the social-media sector create special competition-law concerns because social networks are not ordinary businesses. Large platforms may simultaneously compete for users, advertising revenue, consumer attention, data, creators, software developers and emerging technologies.

An acquisition that appears small financially can therefore have significant competitive consequences. A dominant social-media company may acquire a young platform before that platform develops into a major competitor. Competition authorities increasingly examine whether these transactions eliminate nascent or potential competition, strengthen network effects, increase control over user data, reduce innovation or allow a powerful digital ecosystem to become even harder to challenge.

In Canada, social-media acquisitions are principally reviewed under the Competition Act, especially the merger provisions in sections 91–103. The Competition Bureau investigates transactions, while contested cases can be decided by the Competition Tribunal and reviewed by the Federal Court of Appeal.

Recent amendments have significantly strengthened Canadian merger control. In particular, Canadian law now contains a rebuttable structural presumption for certain highly concentrating mergers, the former efficiencies defence has been removed, remedies are designed to preserve or restore the competition that would have existed without the merger, and the period for challenging certain non-notified mergers has been extended to three years.

Meaning of a Merger

Section 91 of the Competition Act defines a merger broadly. It includes the direct or indirect acquisition or establishment of control over, or a significant interest in, all or part of another business.

Therefore, social-media merger review can cover:

Acquisition of an entire social-networking company.

Purchase of a competing application.

Acquisition of a messaging platform.

Acquisition of an advertising-technology company.

Acquisition of a creator platform.

Purchase of important data or technological assets.

Acquisition of an artificial-intelligence or recommendation technology company.

Transactions involving significant minority interests.

The Competition Bureau may review a merger even when it does not satisfy mandatory pre-merger notification thresholds.

Relevant Markets in Social-Media Transactions

Defining the relevant market is particularly difficult in social media.

A regulator might examine separate markets for personal social networking, short-form video, messaging, professional networking, digital advertising, social-media advertising, creator services or particular advertising technologies.

The fact that many social-media services are offered to consumers for a monetary price of zero does not mean competition is absent.

Instead, platforms may compete through:

Privacy protection.

Advertising levels.

Service quality.

Innovation.

New features.

Content moderation.

User experience.

Data protection.

Speed and reliability.

Creator monetisation.

Consumer attention.

Users effectively provide attention and, in many business models, commercially valuable data, while advertisers pay the platform.

Network Effects

Network effects are particularly important.

A social network generally becomes more valuable when more people use it. If practically everyone in a person's social circle already uses one platform, moving to a smaller alternative may be unattractive.

This can create significant barriers to entry.

A merger becomes concerning where a dominant platform acquires one of the few companies capable of attracting enough users to challenge these network effects.

Authorities therefore examine whether users can realistically switch, whether they use several networks simultaneously, known as multi-homing, and whether new platforms can obtain sufficient scale.

Acquisition of Nascent Competitors

One of the most important issues is whether an established platform is purchasing a future competitor.

Suppose a large social network has 100 million users and a newly created application has only 2 million. Current market shares may make the startup appear insignificant.

However, if the startup has exceptionally rapid growth, innovative technology and unusually strong engagement among younger users, it could develop into a major competitive constraint.

Competition authorities therefore ask a counterfactual question:

What would probably happen to competition if the acquisition did not occur?

An acquisition can potentially prevent competition even before the acquired company has become a major competitor.

This issue has received particular attention following acquisitions such as Facebook/Instagram and Facebook/WhatsApp. The Canadian Competition Bureau itself has discussed these transactions when considering the difficulties associated with so-called killer or nascent-competitor acquisitions in digital markets.

Data as a Competitive Asset

Social-media platforms can possess enormous amounts of information relating to consumer interests, interactions and advertising responses.

Competition authorities may therefore consider whether combining two businesses gives the merged company a data advantage that competitors cannot realistically reproduce.

Data concentration is not automatically unlawful. Combining datasets may improve products, advertising or security.

However, concerns can arise where control over unique data reinforces barriers to entry, improves an incumbent's advertising advantage to an extent rivals cannot reproduce, or prevents competitors from achieving sufficient scale.

Digital Advertising

Many social networks operate multi-sided platforms.

One side consists of users receiving social-media services, often without monetary payment. Another side consists of advertisers purchasing access to audiences.

A merger can therefore affect competition even if consumers continue paying zero dollars.

Authorities may investigate whether the transaction would:

Increase advertising prices.

Reduce advertising quality.

Reduce advertisers' choices.

Restrict access to useful advertising data.

Strengthen the platform's ability to impose contractual conditions.

Reduce innovation in advertising technology.

Structural Presumption Under Current Canadian Law

Canadian merger law was substantially strengthened in 2024.

A merger is now presumptively anti-competitive where the concentration index increases by more than 100 points and either:

the post-merger concentration index exceeds 1,800; or

the merging firms' combined market share exceeds 30%.

The concentration index is generally the Herfindahl-Hirschman Index (HHI).

The presumption is rebuttable. The merging parties can demonstrate that the transaction is nevertheless unlikely to substantially prevent or lessen competition.

Importantly, a merger that does not cross these thresholds can still be challenged on other evidence.

Important Case Laws and Merger Precedents

1. Canada (Director of Investigation and Research) v. Southam Inc.

Canada (Director of Investigation and Research) v. Southam Inc., [1997] 1 SCR 748

Southam involved newspaper acquisitions rather than modern social media, but it remains an important Canadian merger precedent.

The dispute required consideration of relevant market definition and whether an acquisition substantially lessened competition.

The case demonstrates that market definition requires analysis of genuine competitive substitutes rather than merely placing superficially similar products into the same market.

Relevance to social media: Facebook, TikTok, LinkedIn, messaging applications and video-sharing services should not automatically be treated as belonging to one market merely because all operate online. The actual competitive functions and substitutability must be considered.

2. Canada (Commissioner of Competition) v. Superior Propane Inc.

Commissioner of Competition v. Superior Propane Inc.

The Superior Propane litigation became one of Canada's leading merger cases, particularly concerning the former efficiencies defence.

The transaction produced serious concentration concerns, but extensive litigation followed concerning whether economic efficiencies could justify an otherwise anti-competitive merger.

The importance of the historical doctrine has changed because Parliament subsequently removed Canada's merger efficiencies defence.

Relevance to social media: A powerful digital platform can no longer rely on the former standalone efficiencies defence to save an otherwise unlawful anti-competitive merger, although efficiencies may remain relevant to understanding competitive effects.

3. Commissioner of Competition v. Canadian Waste Services Holdings Inc.

Commissioner of Competition v. Canadian Waste Services Holdings Inc.

This case is important for merger remedies.

After competition concerns were established, the Tribunal considered what remedy was necessary to restore effective competition.

Divestiture emerged as an important structural remedy.

Relevance to social media: Where a digital acquisition has substantially damaged competition, competition law may potentially require structural remedies rather than merely imposing behavioural promises concerning how the merged company will operate.

4. Tervita Corp. v. Canada (Commissioner of Competition)

Tervita Corp. v. Canada (Commissioner of Competition), 2015 SCC 3

Tervita is one of Canada's most important Supreme Court merger decisions.

The acquisition involved a landfill business. A major issue was whether acquiring a potential competitor prevented competition that would otherwise have developed.

The Supreme Court confirmed the significance of analysing the but-for world—what would probably have happened without the merger.

Although parts of the case concerned Canada's former efficiencies defence, the potential-competition analysis remains highly relevant.

Relevance to social media: A startup does not have to be a huge present competitor for its acquisition to matter. Authorities can examine whether it probably would have grown into a meaningful competitive threat.

5. Commissioner of Competition v. Rogers Communications Inc. and Shaw Communications Inc.

Commissioner of Competition v. Rogers Communications Inc. and Shaw Communications Inc.

The Commissioner challenged Rogers' proposed acquisition of Shaw. The transaction was ultimately assessed together with the divestiture of Freedom Mobile to Videotron.

The Competition Tribunal rejected the Commissioner's challenge, and the Federal Court of Appeal upheld the result.

The litigation illustrates that merger review considers the commercial transaction that is realistically expected to occur, including relevant divestitures and other transaction arrangements.

Relevance to social media: A platform proposing a major acquisition may attempt to address competitive concerns through asset sales or restructuring. Authorities must consider whether those remedies actually preserve an independent and effective competitor.

6. Commissioner of Competition v. Secure Energy Services Inc.

Commissioner of Competition v. Secure Energy Services Inc.; Secure Energy Services Inc. v. Canada (Commissioner of Competition), 2023 FCA 172

Secure acquired rival Tervita. The Competition Tribunal concluded that the merger substantially lessened competition across numerous local markets and ordered Secure to divest 29 facilities.

The Federal Court of Appeal upheld the result, and the Supreme Court of Canada subsequently declined leave to appeal.

Relevance to social media: The case demonstrates that completed acquisitions are not automatically safe from intervention and that substantial divestiture may be ordered where an acquisition damages competition.

7. FTC v. Facebook / Meta Platforms

Federal Trade Commission v. Facebook, Inc., now FTC v. Meta Platforms, Inc.

The U.S. Federal Trade Commission alleged that Facebook maintained monopoly power through a broader strategy that included its acquisitions of Instagram in 2012 and WhatsApp in 2014.

The FTC argued that Facebook acquired emerging competitive threats rather than facing them through competition on the merits and sought structural and injunctive remedies.

The litigation has been particularly influential in the international debate over retrospective review of digital acquisitions and nascent competition. The FTC's case remained pending according to its December 2025 case update.

Relevance: It demonstrates why regulators increasingly examine whether dominant social networks acquire emerging companies principally because those businesses could become future competitive threats.

8. Meta Platforms / Giphy

The Meta-Giphy transaction became another major international digital merger precedent.

The United Kingdom's Competition and Markets Authority concluded that Meta's acquisition of Giphy created competition concerns, including concerns relating to display advertising and access to GIF services.

The dispute led to extensive proceedings and ultimately to a requirement that Meta dispose of Giphy.

Relevance: The transaction illustrates that an acquisition does not need to involve two identical social networks. An acquisition of an important complementary technology or digital input can still strengthen platform power and harm competition.

Factors Authorities Examine

When reviewing a social-media acquisition, authorities are likely to consider:

Market concentration: How concentrated will the relevant market become?

Potential competition: Could the target independently become an important competitor?

Network effects: Does the acquisition strengthen an existing user-network advantage?

Barriers to entry: Can another platform realistically enter and obtain scale?

Switching and multi-homing: Can users easily maintain or switch to competing networks?

Data: Will the combined company obtain competitively significant data advantages?

Innovation: Will the merger reduce incentives to develop new products or features?

Advertising: Will advertisers lose meaningful alternatives?

Creators and businesses: Could the merged platform gain greater power over creators, developers or commercial users?

Acquisition history: A repeated pattern of acquiring emerging rivals may become relevant to understanding the competitive significance of another acquisition.

Remedies

If a social-media merger substantially prevents or lessens competition, possible remedies can include prohibition of the transaction, divestiture of a business or assets, dissolution in appropriate circumstances, or other orders designed to restore competition.

The Competition Bureau may also resolve concerns through a consent agreement.

Current Canadian law expressly strengthens the remedial objective: the goal is to preserve or restore the level of competition that would have existed without the anti-competitive merger.

Conclusion

Social-media merger review has become one of the most important areas of modern competition law. Traditional analysis based only on present sales or prices is insufficient for digital platforms because consumers frequently pay no monetary price and competition may centre on attention, privacy, data, innovation and network scale.

Canadian competition law therefore permits close examination of acquisitions involving current competitors as well as businesses that could become future competitors. Recent amendments have strengthened this system through structural presumptions, stronger remedies, elimination of the former efficiencies defence and longer review periods for certain non-notified transactions.

Cases such as Southam, Superior Propane, Canadian Waste, Tervita, Rogers/Shaw and Secure/Tervita establish the main Canadian principles concerning market definition, potential competition, competitive effects and remedies. International disputes involving Meta/Facebook, Instagram, WhatsApp and Giphy demonstrate how those principles become especially important in social-media markets, where buying a relatively small emerging platform today may eliminate one of tomorrow's most important competitors.