Your forgetting the part about having to work a separate 40 hour a week job
and what that does to ones time , energy, and output.
...and yet artists still find time to create and monetize what inspires them.
Possible non-monetary motivations.....
http://en.wikipedia.org/wiki/Maslow%27s_hierarchy_of_needsI am not suggesting money doesn't motivate art and profit isn't a catalyst. I merely contend that those who suggest the lack of IP laws enforced by states will lead a "creative vacuum" are grossly exaggerating the consequences.