And, in all reality, this is somewhat true. So, then, the obvious course of action is to convince the video game publishers and developers of the world that Linux is a viable (if, perhaps, a bit niche) market. And by "viable" I mean one thing and one thing only – "profitable."
Luckily, there have been three high-profile recent examples of Linux users going absolutely nuts over video games, forking over their hard-earned cash in the process: the Humble Indie Bundle (drawing in huge numbers of sales — for a DRM-free product, no less — with sales numbers by Linux users consistently beating out sales to MacOS X users); Canonical's Ubuntu Software Center (where video games make up the top 10 paid software packages); Valve's announcement that it is bringing the Steam store, and community portal, to Linux desktop (specifically Ubuntu).
Will the indie game developers (along with Valve) reap the bulk of the rewards that releasing games on Linux is offering...or will some of the big publishers realize what they're missing out on and join in the fun?