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Independent Technology Journalism  ·  Est. 2026
Business & Startups

Big Tech Antitrust in 2026: Who's Actually Winning

The DOJ's Google Ruling Changed the Search Market—Just Not How Anyone Expected On August 5, 2025, a federal remedies judge ordered Google to divest its Chrome browser within 18 months and op...

Big Tech Antitrust in 2026: Who's Actually Winning

The DOJ's Google Ruling Changed the Search Market—Just Not How Anyone Expected

On August 5, 2025, a federal remedies judge ordered Google to divest its Chrome browser within 18 months and open its default search agreement APIs to third-party competitors under a standardized protocol framework. The ruling, coming nearly a year after Judge Amit Mehta's landmark finding that Google had illegally maintained its search monopoly, was supposed to crack the market open. By Q3 2026, Google's search market share in the United States had dropped from 89.4% to 84.1%. That's a real decline. It's also, depending on who you ask, almost nothing.

"The structural remedy looks bold on paper, but the behavioral economics of search are stickier than any court order," said Dr. Priya Nandan, a competition policy fellow at Yale's Information Society Project, who we spoke with in October 2026. "Users don't switch defaults—they tolerate defaults. Microsoft spent $13 billion building Bing into a legitimate product and still couldn't move that needle at scale."

That tension—between aggressive regulatory ambition and the practical inertia of user behavior—defines the current antitrust moment in tech. Across three continents and at least five major enforcement actions, regulators are trying to rewire platforms that have spent two decades wiring themselves into infrastructure. And the outcomes are messier, more ambiguous, and far more technically interesting than the headlines suggest.

Europe Moved First, and the DMA Is Already Breaking Things

The EU's Digital Markets Act, which designated six "gatekeepers" in September 2023, didn't just restrict how companies like Apple and Meta operate in Europe—it created a de facto global product fork. Apple, rather than build a separate EU-compliant iOS, ended up extending its third-party app installation framework (technically formalized under what Apple internally calls the notarization entitlement extension protocol) to additional markets by mid-2026. That wasn't the plan. It was the path of least resistance.

The DMA mandates interoperability for messaging platforms under Article 7. WhatsApp and iMessage are now required to support cross-platform messaging with smaller services using open protocols—specifically, the MIMI (More Instant Messaging Interoperability) working group's drafts under IETF, which are formalized in draft-ietf-mimi-arch. In practice, WhatsApp rolled out a limited API bridge in February 2026. Security researchers immediately found edge cases where end-to-end encryption guarantees degraded when bridging to third-party clients that hadn't implemented the full protocol stack correctly.

Dr. Keiran Molloy, a cryptography researcher at ETH Zurich's Applied Cryptography Group, flagged the problem publicly: "When you mandate interoperability across heterogeneous clients, you don't get the weakest-link problem theoretically—you get it in production, in the first three weeks." His team documented seven distinct handshake failure modes in the bridge layer, two of which could allow metadata exposure under adversarial conditions. Meta patched five of them within six weeks. Two remain open as of this writing.

"Interoperability is a legitimate policy goal. But regulators wrote the DMA as if the hard part was getting companies to cooperate. The hard part is the cryptography."— Dr. Keiran Molloy, ETH Zurich Applied Cryptography Group

This is the underreported cost of DMA compliance. It's not just legal fees and engineering overhead—it's attack surface expansion. Every new integration point is a new perimeter, and "open by regulation" doesn't automatically mean "secure by design."

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