@INTERPUNCT it is probably a case of "too soon" as well as the usual lack of commitment from Google. For me it was one of the most impressive platforms of the last few years, going back to gaming on a console and dealing with downloads and managing local storage does indeed feel like travelling back in time to a darker era.
There are alternatives like GFN. And whilst GFN does indeed work well it lacks the level of polish that Stadia did, as well as the usable free tier.