Valve to release titles for MAC

Valve announced earlier this week that they will be releasing multiple titles for MAC. Well….It’s about time. The “Games for Windows” monopoly is about to crumble. If they can release for MAC, whats stopping them from releasing on GNU/LINUX.
LINK to story on MACRUMORS
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Comment from opi
Time: March 12, 2010, 5:30 pm
I also heard XBOX360 will be “steam compatible”.
This could open a whole new markt for apple and gaming… See TWIT MacBreak weekly Ep.184 (available via ROKU and TWIT.TV)
http://www.twit.tv/mbw184