[stormbrew]

I think it's pretty unlikely that Xorg won't be a part of it somehow. X+extensions is basically the only meaningful, portable, direct interface to video hardware that exists on linux. At least if you want the hardware vendor's own drivers (which steambox obviously would, Nouveau is not up to the challenge).

It would also mean that all the 300+ games that currently work on Steam For Linux would have to be retooled for whatever proprietary windowing layer Valve would have to invent. And Valve would have to convince nVidia to come along for the ride.