If you consider it as a product it's a failure.
And people are bashing Google, Stadia is just a proxy. Google is the one who fucked up here, so it's not like they don't deserve it.
People were saying that goolge will fuck it up, since Stadia was announced. Google super-duper-pinky-promised that this time its different. And now we have this crap.
How are people supposed to feel ?
Or should they be in awe since on paper its amazing ? Execution is what matters in the end.