The thing is that even with steamOS and a TV setup, even if you have wireless keyboard and mouse on a couch it is still difficult to play, you also need a large surface for those to be on as well, on a couch that is not easy. Not every game supports controller and some is just not meant to be played with a controller at all. With some game the icons and text will be so small no way you can read it from your couch. Oh and don't forget the money needed for wireless mouse and keyboard too, for a decent pair it will not be cheap
This is to promote HTPCs and shift gaming toward a different direction. It doesn't take Valve THAT much effort to create and maintain this operating system. The profit that they will get from people using it and buying games from Steam who wouldn't have done so will overcome those expenses.
So from a business point of view, it's a good move. Let's wait for the next 2 announcements before taking these articles seriously.
I find it funny how the author judges SteamOS using mobile operating systems and desktop operating systems as examples. He misses the big picture here (pun not intended).
To most Christians, the bible is like a software license. They don't read it. They just scroll to the bottom and click 'i agree' http://i.imgur.com/nudes.jpg