Looks like Unity Cloud tools might be coming soon. I was thinking of trying out the service and judging by the demos itβs on par with the demos like google stadia.
I am thinking that live service games without downloads can be a thing in the future with the 5G networks.
https://techcrunch.com/2021/08/10/unity-to-acquire-parsec-in-its-biggest-acquisition-to-date/