You're looking at this wrong.
You would use a computer with this OS, and you might start to play a game, and rather than your computer doing the processing, a network of servers would do the processing, then send the result back to your computer.
I really don't like the idea of cloud computing. It ,along with DD, seems to erodes the ability to actually own anything. While there are some benefits, I'm not interested in paying a service everytime I want to play a game. I'd much rather have a machine that does the processing without need for a network.
It would be great for businesses, and quite a few other uses. But the average person has no real need for Cloud Computing.