You know, I thought they were a joke a few months ago but seeing Cyberpunk's performance on older PCs and consoles versus Stadia, I think there's a viable service there for the time being as new AAA devs transition away to new consoles and learn to play with next gen tools.
imo, I think Google needs to campaign Stadia HARD as more efficient than buying a console or PC. $10 a month is more worthwhile than buying a current gen console for $300. Meanwhile, the 50 months it takes to pay off a $500 PS5/XBX at $10/month is a better deal in the long term since Stadia will constantly upgrade while those consoles will start to look "previous gen" in 4-5 years.