Kickstarter actually demonstrates why this is not the sure-win that it appears to be on the surface. Crowdfunding is a great idea, but it's also very risky from a PR perspective. People--not you, perhaps, but most people--feel that giving money merits an equal-value return. At a step above the pure "I believe in you; take my money", you have the step where people at least want constant, accurate updates all the time. That's a cost that may outweigh the benefit of an extra revenue stream. And above that, people keep wanting more and well... that's a problem.

Solvable? Probably. But we haven't solved it yet.