Here's an interesting article from Computerworld - Why open source is under-utilized in graphics? The article ponders why there has not been more penetration of OpenSoure technologies and collaboration in the design community.

I have to confess, I never really thought about (technology software speaking) it till I saw this article. For some reason I always think of the design community as generally supportive of OpenSource. Perhaps it is the inherent anti-Microsoft / pro-Apple slant common among Designers. But there really isn't a viable alternative to Photoshop and like minded, commercially based programs. Certainly not one that has achieved much market penetration. 

Interesting. Wonder of Google has given it much thought?