I experimented with streaming PC games to my iPhone via SteamLink. Nifty concept, but playing traditional PC/console style games on a phone isn't much fun. Your thumbs obscure 1/3 of the screen and the UI elements are often too small to reliably tap. You really have to design the mobile experience independently of the desktop/console experience, and then account for the fact that the two markets are often very different.

I'd be interested to see the breakdown for something like Genshin Impact, which was a true cross-platform release. Mobile gaming is huge in China so there's strong incentive to make it a first-class citizen.