What was the main reason for the legal dispute between Epic Games and Apple

Epic Games introduced a direct payment option in Fortnite to bypass Apple's system and avoid this commission, which Apple considered a breach of its terms and subsequently removed Fortnite from the App Store. Epic argued that Apple's commission and restrictions were unfair and constituted monopolistic practices, accusing Apple of running the App Store as a monopoly and violating antitrust laws. Apple defended its policies as necessary to protect its intellectual property and maintain the security and quality of its ecosystem. The dispute centered on whether Apple's control over app distribution and payments on iOS was anti-competitive