Meanwhile, there's a total of 1 popular game and a bunch of "homebrew" style games very few care about that isn't on the Play Store. You're free to ignore apps not on the App store, but businesses are free to do what's best for them.

And I still don't understand the "I don't want to have multiple stores on my device". you probably have over 100 apps in your phone right now. And if you don 't you have dozens hidden under the surface for basic IOS functionality. is clicking into another store to install one more app a problem? App/Play stores don't even have all the bells and whistles Steam does (no forums, shit curation that spam companies SEO optimize for, no mod workshop, no community aspect, etc), so that's not an excuse.