Epic v. Apple began in 2020 after Epic implemented its own payment system for Fortnite’s virtual currency, bypassing Apple’s commission on in-app purchases. Apple banned Epic from its iOS App Store and Epic filed a lawsuit in response, claiming the App Store — and Apple’s overall walled-garden approach to iOS — violated US antitrust laws. Judge Yvonne Gonzalez Rogers rejected most of Apple’s claims and the Ninth Circuit Court of Appeals largely affirmed the decision.
https://www.theverge.com/2024/1/16/24039983/supreme-court-epic-apple-antitrust-case-rejected