“Google makes a bunch of its money through in-app purchases and virtual microcurrencies. Pay-to-win mechanics may be atrocious, but it’s good for Google’s bottom line. The more intrusive a game’s monetization is, the more money Google stands to make. The Epic Games Store mobile app may be available for both Android and iOS (the latter only in the EU), but Android needs it more.”
Apart from some free games, it is an interesting point made that Epic has more interest in providing quality games and not from profiting from ads in low quality games.
More options for users is also a good thing.
See https://www.howtogeek.com/its-already-worth-downloading-the-mobile-epic-games-store