What I do for a living is somewhat like mercenary prostitution. I spend a lot of energy trying to find games to bring to alternate platforms, like Linux and MacOS, and in my free time, I work on various open source projects, and other freebies like that. So I guess I'm a hooker with a heart of gold, sorta.— Ryan C. Gordon
The most pioneering Ryan C. Gordon quotes that are easy to memorize and remember
I can find lots of examples where a game won't make you rich, but I can't find a reasonable case where a Linux port doesn't have at least a small, positive return on investment.
The simple fact is that code quality tends to improve as you move between platforms... non-obvious bugs on Windows become VERY obvious in the Linux port and vice versa, and thus get fixed. So even the Windows gamers will win in all of this.
What does NOT work best for anyone, though, is being forced to keep a Windows partition around just to play video games. The best operating system for playing games is the one that lets you keep your word processor, instant messenger, email, and music player open in the background while you play. The worst is the one that will force you to shut all that down just to screw around for a few minutes.
I find if you're targeting Windows, Linux, and Mac OS X right from the start, your code will probably work anywhere else that you might try it later. Writing code that is cross-platform from the start requires more discipline, but I find it is worth the effort.
I think [Wine] will be, at a minimum, incredibly useful to archeology, like DosBox has been for playing Wing Commander. Certainly it has been known to save the day with modern titles, too. But to have it as the agreed-upon way to how you play video games on Linux is completely unacceptable for several reasons, both technical and moral.
The real threat to Linux adoption is Apple, not Microsoft. If you didn't know, now you know.