I'd say (and then pointing out my lack of formal or amateurish study of economics) that the issue you're pointing at is that capitalism doesn't function well in a post-scarcity environment, which we're entering. This is because our means of determining value is primarily based on supply/demand dynamics - aka, scarcity. As scarcity goes away, our ability to determine value goes away, and with it, our ability to distribute energy throughout our civilization.
Burning Man (which is definitely NOT a viable economic model and I am NOT aruging that) demonstrates the viability of a new principle: YOUR value is based on what you give away.
Which gets really interesting when you look at economics as a sort of directed thermodynamic problem: What defines where energy (aka money) goes? Right now, it's defined by supply/demand dynamics and wants and needs - what if it were primarily defined by altruism?
You can come at this from a different angle, going back to that grade school career question: If you had a million dollars, what would you do? Or to rephrase, if all your needs were taken care of, what would you do?
Blah, blah, blah, I'm throwing out a bunch of ideas to see how they react. What're your thoughts, given what I've described?