The new gamer kid fan-boy wibbles:
you say that now but steamos has a feature to use a windows pc to host the video games on via the steam client and then steamos can play the games over the local network or the internet to the steamos box.
Listen up, new gamer kid fan-boy -- Peter had already, in the very post you were replying to, demolished that little fantasy:
The workaround seems to be that you stream your games-that-don't-run-on-Linux (i.e. most if not all of them) from your actual Windows PC to your SteamOS box.

At which point I would suggest the vast majority of people are going to go "eh, fuckit...
So please try to read before writing, eh? That way you won't look like a fool by asking something that's already been answered, making an argument that's already been debunked, etc. HTH!