I like that this question is generating resoonses.
My opinion, as a “techie” (although not even close to rich one) with a lot of aritists among friens, is that the resson is the same as to why artists don’t contribute to open source software.
We don’t have the knowledge to understand it, and my feeling is that most art is created for other artists. Whenever I go to some new exhibition, it is utterly borring if none of my educated artist friends are not with me to explain me why is something interesting and how. Also, why something else is utterly shit.
Artist world is not doing nearly enough to educate non artists and help us understand what is being created.
Also, looks like you don’t count games, music, movies and who knows what else as art.