Stadia failed because it wasn't an identity, it was just a piece of hardware.
If you stand in line to buy a Playstation 5, you're part of an exclusive club of PS5-owners and you can play exclusive games for that platform.
If you buy an Xbox you're part of an exclusive club of Xbox-owners and you can play exclusive games for that platform.
If you buy a Nintendo Switch, you're part of a (not-so) exclusive club of Switch-owners and you can play exclusive games for that platform.
If you buy a gaming PC, you're part of the "PCMR" and you can play exclusive games for that platform (and brag about how much RAM you have or whatever).
If you buy a Stadia, you can play some games that already exist on other platforms.
This whole situation isn't surprising. Big tech has a particular disease where they think that other industries are trivial and they can just muscle their way in with their superior intellect and size. Just look at how every MAANGA company is trying to disrupt healthcare right now, has a self-driving car division, etc. (There's some business antipattern, or psychological effect, but I can't remember the term right now).
This is why YCombinator exists, because startups do a deeper dive into their markets and don't usually fall for ego traps like this.
If you stand in line to buy a Playstation 5, you're part of an exclusive club of PS5-owners and you can play exclusive games for that platform.
If you buy an Xbox you're part of an exclusive club of Xbox-owners and you can play exclusive games for that platform.
If you buy a Nintendo Switch, you're part of a (not-so) exclusive club of Switch-owners and you can play exclusive games for that platform.
If you buy a gaming PC, you're part of the "PCMR" and you can play exclusive games for that platform (and brag about how much RAM you have or whatever).
If you buy a Stadia, you can play some games that already exist on other platforms.
This whole situation isn't surprising. Big tech has a particular disease where they think that other industries are trivial and they can just muscle their way in with their superior intellect and size. Just look at how every MAANGA company is trying to disrupt healthcare right now, has a self-driving car division, etc. (There's some business antipattern, or psychological effect, but I can't remember the term right now).
This is why YCombinator exists, because startups do a deeper dive into their markets and don't usually fall for ego traps like this.