Google avoids ad tech breakup as US judge rejects DOJ proposal
Quick Look
- US Judge Leonie Brinkema declined to order Google to sell its AdX advertising exchange, marking the third failed attempt by US antitrust enforcers to break up a Big Tech company in recent years.
- The judge accepted behavioral remedies instead, with details to be sealed for 14 days.
- Google welcomed the ruling while the DOJ expressed partial satisfaction and plans next steps.
AI-generated summary
Why It Matters
This is the third time in recent years that US antitrust enforcers have attempted to break up a Big Tech company through litigation, following failed efforts against Meta (Instagram/WhatsApp) and Google (Chrome browser). The case centered on Google's dominance in the digital advertising technology stack, particularly its control over publisher ad servers and ad exchanges.
Alphabet’s Google has escaped a breakup of its advertising technology business, marking the third time in recent years that United States antitrust enforcers have tried to force a Big Tech breakup and lost.
US Judge Leonie Brinkema in Alexandria, Virginia, on Wednesday declined to make Google sell AdX, where publishers pay Google a 20 percent fee to sell ads in auctions that happen instantly when users load websites.
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The US Department of Justice (DOJ) had argued Google could not be trusted to run the online advertising exchange after Brinkema ruled that Google had illegally quashed competition.
The judge accepted behavioural remedies.
The reasoning behind today’s decision was not immediately made public.
Brinkema filed her opinion under seal for 14 days, leaving the details of how Google must change its ad business unknown for now. She gave the two sides 30 days to submit a joint proposed final judgement.
The case focused on Google’s ad tech “stack” – the suite of tools that website publishers use to sell ads and advertisers use to buy them.
Brinkema ruled last year that Google had willfully monopolised both the publisher ad server and ad exchange markets, and had unlawfully tied the two products together.
Google has said it will appeal the underlying liability ruling.
The government’s case portrayed Google as simultaneously controlling multiple sides of the digital advertising marketplace and owning the platform that publishers use to sell ads as well as the exchange where transactions occur – all while commanding huge advertiser demand. Prosecutors had sought the sale of Google’s ad auction site AdX and the open-sourcing of critical auction technology.
Google characterised the proposed remedies as extreme government overreach that would harm publishers, advertisers and consumers. It had also argued that splitting up the service would be technically unfeasible.
AdX is a small part of Google’s business. Google’s shares pared gains slightly after the ruling and were up 0.6 percent.
The company welcomed the court decision. “We’re very pleased the court rejected the DOJ’s proposal to break apart tools that help small businesses reach new customers and grow,” said Google executive Lee-Anne Mulholland.
The DOJ is “pleased that the court ordered substantial relief”, it said in a social media post on X.
“We are one step closer to restoring competition and bringing relief for the American people in online advertising markets. The Department is evaluating appropriate next steps,” the DOJ said.
US tech crackdown in jeopardy
While Google has been ordered to change some business practices, the ruling is the third time in a row that a judge has rejected a bid by US antitrust enforcers to break up Big Tech.
Sacha Haworth, executive director of The Tech Oversight Project, said the rulings “prove that the courts alone will not save us from Big Tech”. The advocacy group has proposed legislation aimed at restoring competition in digital advertising.
A federal judge in Washington last year rejected an attempt by the Federal Trade Commission (FTC) to make Meta Platforms sell off Instagram and WhatsApp, saying the agency failed to prove that Meta holds a monopoly in a social media landscape that has shifted drastically since the case was brought in 2020. The FTC has filed an appeal.
Likewise, another judge in Washington, who previously ruled that Google holds an illegal monopoly in online search, rejected the DOJ’s bid to make the company sell its Chrome browser, citing rising competition from generative artificial intelligence companies such as OpenAI’s ChatGPT.
What to Watch
AI outlook — possibilities, not facts
The DOJ will appeal the underlying liability ruling that found Google illegally monopolized publisher ad server and ad exchange markets
Likely · Within weeks
Google will implement behavioral changes to its ad tech practices within 30 days as part of joint final judgment negotiations
Very likely · Within days
Open Questions
- What specific behavioral remedies will Judge Brinkema impose on Google's ad tech business?
- Will the DOJ appeal the decision regarding Google's liability for monopolizing ad tech markets?
- How will the sealed opinion affect transparency and public understanding of the ruling?
- Can behavioral remedies effectively restore competition in digital advertising without structural separation?







