Wargaming it though there is no such thing as a "128GB world" from the player's perspective and for a long time high-end games have used many tricks to shoehorn huge worlds into small boxes such as
https://en.wikipedia.org/wiki/Grand_Theft_Auto:_San_Andreas
which was released for the PS2 with just 36MB of RAM! A "128GB world" that is cheaply developed could probably be crunched into a 8GB world that looks good enough with an expensive development process (you need much more out of your systems programmers and artists.) To make something that's truly a different experience you need a "2TB world" shoehorned into a 128GB world which would be an expensive proposition.
I don't think Google could have talked any game dev shop capable of that sort of thing into doing it, it was something Google was going to have to do itself. They could have afforded it. And they could have entirely changed people's expectations about games.
https://cloud.google.com/compute/docs/accelerator-optimized-...
A system with, say, 8 large GPUs could easily generate graphics for 24 or more players and support a complex world as in: something like
https://en.wikipedia.org/wiki/Kowloon_Walled_City
where you can walk through all the doors. A single SMP computer (kinda like couch multiplayer but with multiple screens attached) would run the whole thing which would put a limit on the player count, I can't see it exceeding 100 but the selling point would be the complexity of the world. If anybody could build a gaming cluster that could scale up to more players it would be Google.
And Google was already pouring money into Stadia on the infra side, hell they could have bought a whole studio to make games tailored for Stadia.
Then they didn't.
As a bystander, Stadia looked to me as the most egregious dropping of the ball, in a field where reputation is worth so much.
Only it actually worked (unlike Microsoft's poor excuse of an attempt at the time, it's finally decent), and it was cheaper and with better UX than GeForce Now. For a few years it was unquestionably the best.