Personally, I got an offer of a free Stadia controller from Google, took them up on it. It also included an offer for several games free. I searched through the list of games and, honestly, couldn't tell one from the other. They all seemed to be basically the same thing, some sort of FP adventure. My Stadia controller never ended up showing up, but the games were so uninteresting that I never pursued it. My BIL ordered a free one the same time I did, he ended up getting his. He played it for a few weeks then offered to send it to me because he wasn't that into it either. He's a HUGE game fan.
So, I think Stadia died for reasons other than trust of Google.