Problem is even if they perfect it, with all these ISP's throwing 1tb bandwidth limits on our service, good luck selling it.
Watching one 4k Stream on Netflix for an hour takes 7gb. I cannot even imagine what the hike will be when streaming 4k games with input and responses.
Thing is, games ALREADY have input+responses.. there is no difference here.
Cloud Gaming is meant to replace download+installation+system requirements.
ie: you don't need a specific device to play a game, just need something that can retrieve streamed data: any device.
It's a universal gaming platform.
All inputs & responses are the exact same bandwidth. But the cloud computing needs to be beefier now, as it crunches more data (instead of the client).
And bandwidth needs to be greater, since you're now streaming the graphics, instead of relying on clients to have them already downloaded/installed.
Inputs would be exact same bandwidth, the difference is if the interface has enough leeway to mask the input lag.
Right now the basic way games work is you click a button, there's latency to the server, but you keep clicking things anyway... eventually the server relays back to the client which clicks are valid and actually did something.
You really aren't changing that as long as you don't have a UI/visual delay for the client to click on.