Antitrust policy (called competition policy in most of the world outside the United States) refers to the body of laws and enforcement practices that restrain firms from acquiring or abusing market power in ways that harm consumers, suppliers, workers, or rival businesses. Its three classic pillars are: (1) prohibiting collusive agreements such as price-fixing cartels and bid-rigging; (2) policing abuse of dominance by single firms (predatory pricing, exclusive dealing, tying, refusal to supply); and (3) merger control, which screens transactions that would substantially lessen competition.
The modern field traces to the U.S. Sherman Act of 1890, supplemented by the Clayton Act and Federal Trade Commission Act of 1914. In the European Union, the equivalent rules are Articles 101 and 102 of the Treaty on the Functioning of the European Union (TFEU), enforced by the European Commission's Directorate-General for Competition. More than 130 jurisdictions now operate competition regimes, loosely coordinated through the International Competition Network (ICN) founded in 2001 and the OECD Competition Committee.
Two intellectual traditions shape enforcement. The Chicago School, influential in the U.S. from the late 1970s, narrowed antitrust to a consumer-welfare standard focused on price and output effects. A more recent Neo-Brandeisian or "hipster antitrust" current, associated with figures such as Lina Khan (FTC Chair 2021–2024), argues for considering market structure, labor monopsony, and platform gatekeeping.
Contemporary flashpoints include:
- Digital platforms: the EU's Digital Markets Act (in force 2023) imposes ex-ante obligations on designated "gatekeepers."
- Cross-border merger review, where parallel filings in the U.S., EU, U.K., and China can block global deals.
- State aid and industrial policy tensions, particularly around subsidies for semiconductors and green technology.
For MUN and IR researchers, antitrust intersects with trade law, data governance, development economics, and geopolitical competition over standard-setting.
Example
In 2024, a U.S. federal court ruled in *United States v. Google LLC* that Google had unlawfully maintained a monopoly in general search services, marking the largest antitrust judgment against a tech firm since *Microsoft* in 2001.
Frequently asked questions
They refer to essentially the same field. 'Antitrust' is the traditional U.S. term, rooted in 19th-century trusts; 'competition policy' is preferred in the EU, U.K., and most other jurisdictions, and often has a broader remit including state aid.
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