Google Avoids Ad-Tech Breakup as Judge Orders Broader Rival Access
A federal judge rejected the Justice Department’s bid to force Google to sell its AdX exchange, choosing still-sealed behavioral remedies instead. The ruling removes an immediate breakup threat but leaves open whether interoperability rules can restore competition.

A structural penalty gives way to guardrails
U.S. District Judge Leonie Brinkema rejected the Justice Department’s request to force Google to sell its AdX advertising exchange on Wednesday, leaving the company’s ad-tech structure intact. Her initial order accepted most of the behavioral remedies proposed by the parties, but the full opinion will remain sealed for 14 days while they consider redactions.wtop +1
The decision follows Brinkema’s April 2025 finding that Google illegally monopolized the markets for publisher ad servers and ad exchanges. The court found that Google locked publishers using its ad server into AdX, harming publishers, competition and consumers of information on the open web.nytimes +1
Interoperability replaces divestiture
The changes are expected to make Google’s advertising tools work more readily with competing services, although the precise obligations are not yet public.pymnts +1 Google had offered to give rival publisher ad servers access to real-time bids from AdX, remove certain pricing restrictions and promise not to restore discontinued auction practices.pymnts
The government argued that conduct rules were inadequate because Google could manipulate the algorithms underpinning its market power in ways that would be hard to detect.wtop Google countered that separating the exchange from its infrastructure would be technically difficult and could disrupt publishers; its court estimates said the system handles 55 million requests each second.wtop +1
Publishers use AdX to auction advertising space as webpages load and pay Google a 20% fee. The government had alleged that Google’s control across several layers of the advertising stack allowed it to restrict competition and charge more, while Google said an integrated system kept a complex market functioning reliably.cnbc +1
A win for Google, with enforcement questions unresolved
Google called the rejection of a breakup good news for small businesses that use its tools to reach customers. Critics said the lighter remedy failed to match the earlier monopoly finding, sharpening the dispute over whether courts can curb entrenched technology platforms without ordering asset sales.nytimes +1
The ruling is the third recent defeat for U.S. enforcers seeking a Big Tech breakup. Judges also declined to force Google to sell Chrome in its search case and rejected the Federal Trade Commission’s attempt to unwind Meta’s acquisitions of Instagram and WhatsApp.reuters +1
For Google, the immediate benefit is the removal of a forced AdX sale, a meaningful legal and operational risk even though the exchange contributes a relatively small share of the wider company. For publishers and rivals, the test comes later: whether the still-secret interoperability rules can loosen Google’s control in practice, and whether those rules can be monitored strongly enough to prevent another round of exclusionary behavior.pymnts +1