Launching a Stadia game was never truly one click for me. It always required several, and then you'd have to endure the same old load screens and splash screens and menus as any other platform. The load times should have been faster, and they should have had platform requirements to make it faster to jump into gameplay without nagivating menus after load. I heard them talk about deep links directly into gameplay but I never saw it, it must not have been implemented in many games. But I did see a bunch of Stadia account related clickthrough BS that added more clicks and more load time (and sometimes bugs) when all I wanted to do was play.

> It was also as easy to port games too as any Linux port would be

And nobody bothers to port to Linux either. It isn't trivial in many cases. And I believe Stadia wasn't just as easy because of a Vulkan requirement along with other platform integration and certification stuff. An unhappy medium of too many platform requirements to be trivial to port to, but not enough to actually make Stadia a better experience than other platforms.

> Online play was free

Only if you bought games at full price, trusting Google to run the service forever. Clearly a risky bet, and the risk was obvious to everybody at the time, not just in hindsight.

> more than 50 games in the subscription

The selection was not compelling compared to other platforms' subscriptions. If they had had a larger catalog to draw from, that could have helped.