A federal judge who presided over the antitrust showdown between Fortnite developer Epic Games Inc. and Apple Inc. found that Epic failed to prove that the tech giant is a monopolist, but ordered Apple to allow certain in-app purchasing communications.

Apple said it sees the judge’s decision a huge win, but the introduction of more accessible external payment options could mean Apple loses out on a portion of the 30% commission it earns from payments made to developers on the App Store.