I feel like some of these perspectives are very tech industry focused rather than gamer focused. As a gamer, I think Stadia failed because the system they created doesn't make sense. You had to buy games at real $40-$60 prices but you could only play them through this limited service. I don't think anyone wants that. Compare that to paying the same price for a regular PC game which you can play via streaming using a…
Admittedly this approach has worked once, and extremely successfully: Android. But Google tend to believe that being from Google will make a product more attractive when the exact opposite is true. (For many reasons, including the simple lack of trust that Google will still be in a market in five years time.)