FTC v. Meta: Structural Regulatory

The FTC’s five-year campaign to unwind Meta’s Instagram and WhatsApp acquisitions ended in a full defense judgment in November 2025, Judge Boasberg found no current monopoly in a market that includes TikTok and YouTube, and the agency is now trying to revive the case in the D.C. Circuit.

LATEST DEVELOPMENT · MAY 22, 2026

The FTC filed its opening D.C. Circuit brief on May 22, 2026, arguing monopoly power should be assessed as of the complaint and that TikTok’s post-2020 growth is ‘irrelevant’. The American Antitrust Institute filed an amicus in support on May 29, and Meta’s response brief is due August 20, 2026.

PREDICTED OUTCOME

AI-GENERATED · METHODOLOGY →

Respondent win ~80% likely HORIZON: D.C. Circuit ruling late 2027 to mid-2028 CONFIDENCE: MEDIUM

Most likely outcome is affirmance of Boasberg’s defense judgment, roughly 80% probable, with argument in late 2026 or the first half of 2027 and an opinion between late 2027 and mid-2028. The controlling driver is the dual basis of the ruling: a legal holding that Section 13(b) reaches only current or imminent violations, which tracks existing circuit law on “is violating or is about to violate,” plus post-trial factual findings on market definition and share that are reviewed for clear error after a seven-week record. The FTC’s appellate theory, that monopoly power must be measured as of the December 2020 complaint and TikTok’s later growth is irrelevant, does not solve its remedial problem, because forward-looking divestiture of Instagram and WhatsApp still requires proof that Meta holds durable power today. Settlement is close to unavailable here, since Meta won outright and has no reason to concede structural or behavioral terms, and the agency has already committed political capital by briefing the appeal. The leading alternative is a narrow partial reversal on the timing-of-assessment question with remand to Boasberg for further findings, which I put near 12% and which would still leave Meta a strong favorite on any second pass. A quiet abandonment of the appeal or a negotiated consent framework sits below 5%. Expect a cert petition if the FTC loses, with denial the likely end state by 2029.

Post-trial findings on market definition reviewed for clear error · Section 13(b) forward-looking requirement independently supports judgment · Meta won outright, so no settlement incentive · Appeals from full defense judgments rarely succeed · FTC politically committed to pressing appeal

Generated by claude-opus-5 on Aug 4, 2026, from this case’s record only. It stands until a major development changes the record. Not legal or investment advice. How predictions are made →

BACKGROUND

Filed in December 2020, the FTC’s suit sought the most dramatic remedy in modern antitrust: divestiture of Instagram (acquired 2012) and WhatsApp (2014), on the theory that Meta pursued a ‘buy-or-bury’ strategy to protect a monopoly in personal social networking services. The complaint was dismissed as insufficient in June 2021, repleaded that August and sustained in January 2022. A parallel state-AG case was dismissed as untimely. After summary judgment was largely denied in November 2024, the case went to a seven-week trial beginning April 14, 2025, with Mark Zuckerberg as the opening witness.

On November 18, 2025, Chief Judge James Boasberg entered judgment for Meta. He held that TikTok and YouTube, whose features have converged with Instagram’s and Facebook’s, belong in the relevant market, leaving Meta with a share below 50% and declining, and that Section 13(b)’s forward-looking design requires the FTC to prove current or imminent monopoly power, whatever the historical record showed. The FTC noticed its appeal on January 20, 2026 and filed its opening D.C. Circuit brief on May 22, 2026, arguing monopoly power should be measured when the case was filed and that TikTok’s later growth is irrelevant. Meta’s response is due August 20, 2026, with argument expected late 2026 or in 2027.

TIMELINE

MAY 22, 2026APPEAL

FTC files opening appellate brief

The agency argues monopoly power is measured at filing. AAI’s supporting amicus follows May 29. Meta’s response is due August 20, 2026.

AAI amicus in FTC v. Meta Platforms (D.C. Cir. No. 26-5028)
JAN 20, 2026APPEAL

FTC notices appeal to the D.C. Circuit

FTC v. Meta — Wikipedia
NOV 18, 2025JUDGMENT

Judgment for Meta: no current monopoly power

Judge Boasberg places TikTok and YouTube in the relevant market and holds Section 13(b) requires proof of current or imminent violation.

FTC Loses Retroactive Merger Challenge (Skadden)
APR 14, 2025HEARING

Trial begins. Zuckerberg testifies

FTC v. Meta — Wikipedia
NOV 13, 2024PROCEDURAL

Summary judgment largely denied. Case set for trial

FTC v. Meta Platforms tracker (Tech Policy Press)
AUG 19, 2021PROCEDURAL

Amended ‘buy-or-bury’ complaint filed

Sustained in January 2022, setting up years of discovery.

FTC v. Meta — Wikipedia
JUN 28, 2021PROCEDURAL

Complaint dismissed as insufficient

The court finds the FTC failed to plausibly allege monopoly power but grants leave to replead.

FTC v. Meta — Wikipedia
DEC 9, 2020FILING

FTC sues to unwind Instagram and WhatsApp acquisitions

FTC v. Meta — Wikipedia