Once bandwidth is ubiquitous enough to stream 4K games at 60 FPS without having to INSTALL anything or even OWN A GAMING PC/CONSOLE, this is a no brainer.
Why shell out for a new 2080TI card when you can just pay another month to Stadia and let them handle all the hardware to run Red Dead Redemption 2 at 4k 60 FPS?
No downloading a 150 GB game, no patching, no constant hardware upgrading, no having to go back in your catalog and reinstall everything if you get a new system. They are all there and you just "press start".
I realize Stadia currently does not run RDR2 at 4k and 60 FPS. But it will once the hardware and bandwidth landscape catches up.