Meta’s Antitrust Trial: Are Instagram and Facebook on the Line?
The U.S. government has officially rested its case in Meta’s antitrust trial, a landmark legal battle that could reshape the future of tech mergers. At stake is whether Meta (formerly Facebook) should be forced to divest Instagram and WhatsApp, two major acquisitions from 2012 and 2014 respectively.
This isn’t just a fight over old deals. It’s a defining moment for how regulators police digital power—and whether tech giants can keep buying up potential rivals unchecked. The outcome could either open the floodgates for stricter scrutiny or shut the door on retroactive breakups entirely.
Meta on trial: Monopoly or just market leader?
The Federal Trade Commission (FTC) alleges that Meta bought Instagram and WhatsApp to neutralise rising threats and solidify dominance in “personal social networking services.” This market, as defined by the FTC, focuses on apps connecting people with real-life friends and family.
To support its case, the FTC has leaned on historical internal communications. One key piece of evidence is a 2006 company blog post in which Mark Zuckerberg wrote, “Facebook is about real connections to actual friends.” According to the FTC, this underlines Meta’s unique hold on personal networks—an advantage no rival can match.
Meta, however, insists that the FTC has defined the market too narrowly. It argues that it competes with platforms like TikTok, YouTube, Snapchat, and X (formerly Twitter) for user attention and not just for friendship-based connections. “Instagram competes with TikTok and YouTube, just ask any 17-year-old,” said a Meta spokesperson after the FTC rested its case.
Inside the courtroom: Strategy, nostalgia, and shifting social norms
The trial, held in Washington, D.C., began in April 2025 and is presided over by Judge James Boasberg. Testimony has come from Meta CEO Mark Zuckerberg, former COO Sheryl Sandberg, Instagram head Adam Mosseri, and Facebook app lead Tom Alison.
Instagram co-founder Kevin Systrom testified that Facebook had “undermined Instagram’s independence” after the acquisition—supporting the FTC’s argument that the purchase was meant to suppress competition.
Adam Mosseri stated that Instagram is now closer to TikTok than Facebook, aligning with Meta’s defense that user expectations have evolved. Tom Alison echoed that sentiment, saying Facebook is in “upheaval,” and emphasized the importance of features like Reels in retaining users.
A new kind of antitrust argument
Unlike traditional antitrust cases involving price manipulation, this one revolves around free services. The FTC claims Meta’s actions harmed innovation, reduced quality, and limited choice—rather than raising costs for consumers.
Economist Scott Hemphill testified that Meta acted like a monopolist, but admitted under cross-examination that he lacked direct documentation to conclusively prove it.
Statements from TikTok and YouTube executives further complicated matters. TikTok’s Adam Presser said, “I don’t think of us as a social app,” while YouTube’s Aaron Filner said users rarely use YouTube to share content with real-life friends.
Judge Boasberg’s Tightrope
Judge Boasberg acknowledged the difficulty of defining social platforms. He noted how features like feeds and messaging have become universal and questioned whether changing norms render the FTC’s market definitions outdated. He likened the decline of voice calls to the generational shift in social media usage.
His decision will likely hinge on whether apps like Instagram and WhatsApp truly operate in a distinct market from TikTok and YouTube—or whether they’re all competing for the same slice of digital attention.
Why this case matters beyond Meta
The U.S. government has only pursued two other recent breakup cases in Big Tech—both involving Google’s ad and search businesses. If Meta is forced to spin off Instagram and WhatsApp, it would mark the most aggressive antitrust move in the tech sector in decades.
Such a decision could dramatically alter how startups and investors view M&A as an exit strategy. If older acquisitions can be retroactively challenged, future consolidation deals may face new levels of legal risk.
Daniel Rubinfeld, former DOJ antitrust deputy, stated: “If the FTC wins, there will likely be more aggressive antitrust enforcement.” Even if no breakup occurs, a strong verdict could shape how Big Tech approaches future mergers. Regulators in Europe and the UK are already pushing harder, as seen in the near-blocking of Microsoft’s acquisition of Activision.
What happens next in the Meta’s antitrust trial?
On May 16, 2025, the FTC concluded its case after five weeks of testimony and evidence. Meta is now presenting its defense, which includes rebuttal from executives, experts, and rival firms. The company disputes the FTC’s market definition and argues that its acquisitions were pro-competitive.
Judge Boasberg is not expected to rule immediately. Once the defense rests, both sides will submit final arguments. A decision is expected in late 2025 or early 2026.
Regardless of the outcome, this trial will have a lasting impact on how tech consolidation is regulated in the U.S. and beyond.
Distilled
Meta’s antitrust trial is more than a legal showdown—it’s a referendum on the rules of competition in the digital era. As Facebook and Instagram transform from personal connection tools to entertainment ecosystems, the case asks whether old acquisitions deserve new scrutiny.
No matter the verdict, regulators are signaling that size won’t shield platforms from accountability. The ripple effects of this case could influence tech policy and corporate strategy across the globe for years to come.