Good question. Imagine you are the owner of a franchise you admire (i.e 1800-GOT-JUNK). Could you build it and keep it successful?
The issue we face is that our 'ideas' are entirely unproved, while a franchise is proven, so while there is risk, there is a light at the end of the tunnel. I think the absence of a 'light' allows us to drop a 'idea' and pick up another one thinking this will be better.