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Google Makes Final Plea to Avoid Ad Business Breakup as Antitrust Trial Concludes

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Dateline: ALEXANDRIA, Va., November 21, 2024 – Alphabet’s Google (GOOGL.O) delivered closing arguments Thursday to avoid a forced breakup of its advertising technology business following a federal antitrust trial 1.

The outcome could significantly impact Google’s revenue stream, as its advertising business generated over 200 billion in 2023, representing roughly 77% of Alphabet’s total revenue.

Key Takeaways

  • Google fights DOJ demand to spin off ad-tech operations
  • Federal judge considering remedies after finding illegal monopolies
  • Ad business represents majority of Alphabet’s 300 billion revenue

Market reaction & context

Alphabet shares have remained relatively stable during the trial proceedings, trading near 170 per share. The stock has outperformed the broader Nasdaq 100 index by approximately 15% year-to-date, suggesting investors view a forced breakup as unlikely 2.

The case represents one of the most significant antitrust challenges facing Big Tech companies, alongside similar actions against Meta, Apple, and Amazon.

Detailed analysis

The Department of Justice is seeking to force Google to sell Google Ad Manager, formerly known as Ad Exchange, which serves as a marketplace connecting advertisers with publishers 6. Federal Judge Amit Mehta found in April that Google maintains illegal monopolies in two ad-tech markets 9.

Google’s defense centers on arguments that forced divestiture would harm competition and innovation in digital advertising. The company has simultaneously offered concessions to European regulators in a separate but related antitrust case 4.

Regulatory outlook

Judge Mehta is now weighing potential remedies after determining Google’s market dominance violates antitrust laws. The case represents a broader government effort to rein in Big Tech’s influence across digital markets.

Legal experts suggest any final ruling could take months, with appeals likely regardless of the outcome. The precedent could influence ongoing antitrust cases against other technology giants.

Business impact

A forced breakup would fundamentally alter Google’s business model, potentially reducing its ability to leverage data across advertising platforms. The company’s integrated ad-tech stack currently allows it to capture revenue at multiple points in the digital advertising supply chain.

Industry analysts estimate Google’s ad-tech operations generate between 20 billion to 30 billion annually, though the company does not break out specific revenue figures for these services.

Conclusion

The trial’s conclusion marks a critical juncture for Google’s advertising empire and broader antitrust enforcement in the technology sector. While the company has successfully defended against previous regulatory challenges, the scope of this case presents unprecedented risks to its core business model.

Investors will closely monitor Judge Mehta’s final decision, expected in the coming months, as it could reshape the digital advertising landscape and set precedents for future Big Tech regulation.

Not investment advice. For informational purposes only.

References

1(November 21, 2025). “Google aims to dodge breakup of ad business as antitrust trial wraps”. Reuters. Retrieved November 21, 2025.

2(November 21, 2025). “Google aims to dodge breakup of ad business as antitrust trial wraps”. The Economic Times. Retrieved November 21, 2025.

3(November 21, 2025). “Google aims to dodge breakup of ad business as antitrust trial wraps”. The Star. Retrieved November 21, 2025.

4(November 14, 2025). “Google offers ad-tech changes in EU antitrust case but a breakup is”. CT Post. Retrieved November 21, 2025.

5(November 21, 2025). “Google aims to dodge breakup of ad business as antitrust trial wraps”. Lemmy World. Retrieved November 21, 2025.

6(September 22, 2025). “DOJ aims to break up Google’s ad business as antitrust case resumes”. Ars Technica. Retrieved November 21, 2025.

7(September 24, 2025). “Google fights to block ad tech breakup as antitrust trial opens”. TECHi. Retrieved November 21, 2025.

8(November 17, 2025). “Google ad tech antitrust trial closing arguments moved back”. The Hindu. Retrieved November 21, 2025.

9(November 17, 2025). “ABA Antitrust Daily Digest November 17, 2025”. Facebook/ABA Antitrust. Retrieved November 21, 2025.