Google found to hold illegal monopoly over online ad business

Key Points

  • Google has been ruled to hold an illegal monopoly in the online advertising business.
  • The ruling affects Google's control over the publisher ad server and ad exchange markets.
  • The company might need to divest parts of its advertising technology business.

Summary

A federal judge has determined that Google maintains an illegal monopoly in the online advertising sector, marking its second antitrust defeat in over a year. The lawsuit, initiated by the U.S. Justice Department and 17 states in January 2023, accused Google of violating antitrust laws in three key markets: publisher ad servers, ad exchanges, and advertiser ad networks. Judge Leonie Brinkema confirmed Google's monopoly power in the publisher ad server and ad exchange markets but dismissed the claims regarding the advertising network market. This ruling highlights Google's practices that have allegedly harmed competition and reduced product quality in open-web display advertising. Following the decision, Alphabet's shares dropped by over 1%. Google, which earns a significant portion of its revenue from advertising, now faces potential divestitures in its ad tech business, with an opportunity to appeal the ruling. This case is part of a broader scrutiny of Big Tech, with similar antitrust battles involving Amazon and Meta currently underway.

yahoo
April 17, 2025
Stocks
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