[hevical]

Once Steam comes to Linux, I don't see many reasons why a lot of gamers won't switch over. Many of the people I who use Windows to develop in Python/Ruby/etc use either a VM or SSH into a Linux box, simply because they want to game. I think many people will not want to pay the Microsoft tax, especially for Windows 8.

[cobrausn]

Because most games on Steam will still only run on Windows. Until game developers take up the charge (which Steam on Linux might encourage), it's just a window (no pun intended) into what could be.

[nvmc]

The only games that will be on GNU/Linux, at least at first are Valve games and crappy indie flash games. While it's the first step, most developers aren't on board. Yet.

[Maakuth]

Most of the Humble Indie Bundle games seem to be available on Linux and I wouldn't call them crappy nor flash. But yeah, the big titles rarely work. Valve's work on porting their Source engine to Linux will certainly help this.

[throwaway64]

every humble bundle game has both been available on steam, and linux.