Epic and Google are vastly different systems. Epic can get away with paying much less because the effort required by game developers is minimal. But for a game

Epic and Google are vastly different systems. Epic can get away with paying much less because the effort required by game developers is minimal. But for a game to be featured on Google, the game developers have to port it to Vulkan and Linux. This only makes sense for game developers if the cost of development/porting is going to be less than the money that they would make from the google stadia store. And given the less number of people who are using Stadia, game developers are shying away. And users are shying away because of lack of games. It's a classic chicken and egg problem which is unique to Google stadia. Geforce Now supports Windows games and xCloud uses microsoft's xbox library.