Google has escaped a court-ordered breakup of its advertising technology business after a federal judge in Virginia rejected the US Justice Department's push to force the sale of the company's online advertising exchange, AdX. The ruling, issued on Wednesday, marks the second significant courtroom victory for Google against the Justice Department's broader effort to dismantle alleged illegal monopolies in the tech sector.
Judge declines to order AdX sale
US District Judge Leonie Brinkema, sitting in Alexandria, Virginia, declined to compel Google to divest AdX, the platform where publishers pay a 20% fee to sell ad space in real-time auctions that occur when users load web pages. Instead, the judge accepted most of the behavioral remedies proposed by the parties involved in the case, according to court documents.
The lawsuit, filed in 2023 by the Justice Department and a coalition of state attorneys general, accused Google of unlawfully dominating the ad tech markets used by online publishers and websites. In April 2025, Judge Brinkema had ruled that Google held illegal monopolies in both the server-side ad hosting market and the ad exchange market, finding that Google had locked publishers into using AdX through its ad server.
At that earlier stage, Brinkema stated that Google's anticompetitive conduct “substantially harmed Google’s publisher customers, the competitive process, and, ultimately, consumers of information on the open web.” The recent remedies trial focused on what actions, if any, should be taken to address those findings.
Justice Department arguments rejected
During the remedies trial, the Justice Department argued that Google's history of anticompetitive behavior meant it could not be trusted to operate AdX fairly. The government sought a forced sale as the most effective remedy to restore competition in the ad tech sector.
Google countered that a forced divestiture would be technically complex and would trigger a prolonged and disruptive transition for its customers. The company also pointed out that its own previous offer to sell AdX to resolve a European Union antitrust investigation, as reported by Reuters in 2024, differed from the Justice Department's demand.
The financial impact of AdX on Google's overall business is relatively modest. According to Wedbush research and analysis of court documents, Ad Manager accounted for 4.1% of Google's total revenue and 1.5% of its operating profit in 2020. More recent financial figures were redacted from court filings, leaving the current contribution unclear.
Third major antitrust defeat for enforcers
This ruling is the third consecutive instance in which a federal judge has rejected a government attempt to break up a major technology company, a crackdown that began during Donald Trump's first presidential term. The outcome is likely to intensify debate over whether courts are equipped to address the tech industry's growing influence over the US economy.
In a separate case last year, a federal judge in Washington dismissed the Federal Trade Commission's attempt to force Meta Platforms to divest Instagram and WhatsApp, ruling that the agency had failed to prove Meta held a monopoly in a social media market that had evolved significantly since the case was filed in 2020.
Similarly, another Washington judge, who had previously determined that Google holds an illegal monopoly in online search, rejected the Justice Department's request to force the sale of the Chrome browser. That judge cited rising competition from generative AI companies such as OpenAI's ChatGPT as a factor in the decision.
Looking ahead, antitrust cases against Amazon and Apple, which focus on large smartphone and online retail markets, are not scheduled to go to trial until 2027 at the earliest. The outcome of these cases will be closely watched as the judiciary continues to shape the boundaries of antitrust enforcement in the digital economy.
