Actualy all that inux is missing is some killer apps here and there. I mean if Fedora has SystemD automatically loading hid-wiimote (Linux 3.1 and up) and BlueZ plus the Wiimote profile plugin (some non-standard pairing issues) then you basically have a Wii. OpenGL 2.1 support in Mesa, good enough Gallium drivers for cheap AMD cards. Why aren't there some nice JOGL games? You don't even need to package the damn software for a distro as it's just standard Java packageing.
Anyway... all I'm saying is that Stean=m is either going to die, or it's going to become like OnLive and Gaikai and by then it's platform independant anyway and it doesn't matter anymore.