I've heard that there are some unofficial browser apps for Apple TV. Is it theoretically possible that Stadia could work on them? I already know that there's no official way to get Stadia working on it because of Apple's restrictions. But there must be a way to install a browser via my PC or something and simulating an iPad or a Desktop Chrome Browser...
I can't try it myself since my Apple TV that I've ordered is still on its way. But I've found some open source Web Browsers on GitHub like this: https://github.com/jvanakker/tvOSBrowser
I tried this with the unofficial tvos browser and It keeps wanting safari...