In a court filing supporting Epic, the American Antitrust Institute says that Apple's antisteering changes to the US App Store fell far short of fixing the problem, and Apple's appeal arguments would tank almost every antitrust remedy and precedent. The amicus brief relates to the ongoing legal spat between Apple and Epic relating to App Store payment policies. Those policies saw Fortnite kicked out of the store in 2020. The saga saw Apple found guilty of using "anti-steering" policies to block app developers from offering third-party payment methods. Judge Yvonne Gonzalez Rogers ruled that Apple's stance was in violation of California's Unfair Competition Law (UCL). In April 2025, an evidentiary hearing was held in which Apple's decision to charge a 27% commission on non-App Store transactions was discussed. Ultimately, Apple's stance was found to be in defiance of the court's ruling.