Will Steam Box Deliver?
Win 10 isn't total shit and seems to have much less consumer backlash. If Valve don't get Steam boxes on the market soon (and they're already late for Christmas) then they are unlikely to gain real traction as people won't see the need to switch from Windows.
The current level of GNU/Linux adoption makes it pain-for-no-gain for companies to support GNU/Linux.
And I say that with a heavy heart as I am a GNU/Linux user.