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…
Google, Facebook, etc. are victims of early success. They made their billions on low hanging fruit, by throwing a lot of resources at problems with very high demand for a solution that weren't yet tackled well (e.g. query the internet, keep in touch with friends). So it's no wonder that in this day in age they are incapable of understanding product market fit, innovating, or competing in a market with competent players and a lower barrier to entry.