I found this quite interesting from the gabe interview:
So now we’re in this strange world where we have people who are using the Steam workshop who are making $500,000 per year building items for other customers. [...] We know of other game developers making more money building content for the workshop than what they get in their day job.
MuzixMon wrote on Jan 8, 2013, 21:30: If these new boxes are Linux based will they still work with games designed for Windows? Or will there be a limited selection of titles until more support for Linux based games? I'm glad they aren't using a Microsoft OS, after what MS did to PC gaming they don't deserve one red cent from us.
Gabe mentions in the interview that they will make it so windows can be installed on it by the end user.