There's been OnLive, GameFly Streaming, GeForce NOW, PlayStation Now, Shadow, GameCloud, starting in 2003, and none of them have really taken off. I could see PlayStation Now and an Xbox cloud based gaming platform slowly expand overtime, but I have 0 expectations from Google.
It's simple math: - assuming you answer the overall to-stream-or-not-to-stream question with 'yes' - and you already have a decent internet connection anyway 129 € for Stadia + 0 € for subscription (if you use the cost free none-pro model when it comes out) + ~60 € for a top tier game…