The glory days of cloud gaming, for me, were when i was a beta subscriber to GeForce Now and I could play all my Steam and Blizzard Games at high graphics. Slowly the picking got slimmer and slimmer, and then Nvidia started charging.
My dream is to pay $5 a month to play my existing games on a decent computer without having to buy one. Given the heavyweights who have tried and failed to provide this, I’m guessing that it’s not going to happen any time soon, or at all. The more likely future is platform-specific, siloed.