Search Competition

KGI’s work on search competition brings together experts from across economics, technology, law, and business to help advance and inform interventions to restore competition in the digital search market. Our work examines both high-profile antitrust litigation in the US and the development of novel ex-ante regulatory frameworks in Europe and the UK.

Search engines shape how billions of people find and access information and what voices get heard online. Google Search – the world’s dominant search engine – has faced mounting regulatory scrutiny and enforcement actions around the world over its anti-competitive practices designed to preserve its dominance across the web and devices. Search is a complex market where designing effective interventions requires grappling with questions related to large-scale data collection, advances in AI and other technological inputs, relationships with adjacent markets in mobile and on the web, and consumer behavior and decision-making in the market.

KGI’s work on search competition is focused on seeding and creating intellectual foundations for effective interventions amidst this complexity. Our work examines both high-profile antitrust litigation in the US and the development of novel ex-ante regulatory frameworks in Europe and the UK. 

We convene experts from across economics, technology, law, and business to produce novel insights. We also produce our own technical analyses. Key outputs have included: 

  • Considerations for Effective Search Competition Remedies, a 2024 report aimed at informing the design of remedies in the U.S. v. Google search antitrust litigation. The report synthesized the results of the Future of Search Competition Workshop, a private convening of experts focused on search.
  • The Technical Feasibility of Divesting Google Chrome, an in-depth technical report published in 2025 examining how a Chrome divestiture could be structured for success and demonstrating that an independent Chrome browser could effectively compete with other major browsers.

Latest Work

Digital Competition Conference 2026: The Next Phase of Competition in Digital Markets

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Digital Competition Conference 2026: The Next Phase of Competition in Digital Markets

This year’s Digital Competition Conference brought together researchers, policymakers, businesses, litigators, and civil society experts from over 37 countries to explore the latest lessons, challenges, and opportunities in regulating and enforcing competition in digital markets.

First Steps Toward Operationalizing Age Assurance Mandates: New York SAFE for Kids Act Proposed Rules

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First Steps Toward Operationalizing Age Assurance Mandates: New York SAFE for Kids Act Proposed Rules

As governments around the world move to require age assurance online, attention is growing around whether and how these mechanisms can be implemented accurately and effectively. Recently proposed rules from the New York Office of the Attorney General represent the most significant effort to date by a US public authority to operationalize an age assurance mandate. KGI’s comments on the proposed rules recommend improvements to make them more technically sound and to better account for privacy and service availability.

How the European Commission Can Strengthen Enforcement of the Digital Markets Act

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How the European Commission Can Strengthen Enforcement of the Digital Markets Act

As the European Commission launches its first-ever statutory review of the Digital Markets Act, KGI’s Alissa Cooper and Tracy Xu joined with a group of European and American scholars to provide a critical assessment of how the regime has performed thus far and  recommendations for how implementation can be strengthened.

A Missed Opportunity to Address Google’s Market Power in Search in the UK

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A Missed Opportunity to Address Google’s Market Power in Search in the UK

The UK’s competition regulator has built solid evidence of Google’s market power in search, but its proposed interventions are not poised to address it. In recently filed comments, KGI explains that without confronting Google’s control over default distribution and sharpening its publisher and user choice rules, the Competition and Markets Authority’s proposed conduct requirements risk preserving the very market power they are meant to constrain.

What US Lawsuits Reveal About Platform Design That DSA Reports Don’t

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What US Lawsuits Reveal About Platform Design That DSA Reports Don’t

TikTok’s and Meta’s 2025 DSA risk assessments describe a range of risks and a multitude of mitigations addressing risks to minors: screentime management, parental controls, privacy-oriented design defaults, and restrictions on notifications. However, the risk assessments provide very little information about the level of risks and the effectiveness of chosen mitigations. Internal company documents released in US litigation, on the other hand, tell a different story.

Measuring Risk: What EU Risk Assessments and US Litigation Reveal About Meta and TikTok

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Measuring Risk: What EU Risk Assessments and US Litigation Reveal About Meta and TikTok

Across the EU and US, two influential digital governance regimes are producing new evidence about how large social media companies assess and respond to potential risks on their platforms. KGI’s latest report compares Meta and TikTok’s EU risk assessments with internal documents emerging from US litigation, revealing significant gaps between public claims about risk mitigation and evidence of how these risks are actually addressed.

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