"running on any living room machine" ??
I have about 50 games on Steam and they run ONLY on windows so what do they mean?
Any living room machine running on an Intel CPU with Windows 8 as first layer?
Or, buy your games again on a new platform? 
Man, are you out of touch or what? There's been a Steam client out for Linux for quote some time now and it runs my Steam games quite nicely. Serious Sam 3 BFE and my other games run as good on Linux as they do on my Windows machine. There's also a Steam client for OSX but I haven't played with it. No, you don't have to buy native Linux or OSX versions of the games. You buy once, then play on any platform that runs Steam.
