Epic Games, the maker of the hit multi-platform Fortnite game, has sued Apple for anti-competitive behavior, alleging that Apple monopolizes the App Store payments process and gouges developers for 30% of their revenues.

At stake is billions of dollars in revenue for Apple.

And potentially billions for Google too.

“At a market cap of nearly $2 trillion, Apple’s size and reach far exceeds that of any technology monopolist in history,” the lawsuit says.