I don't think the DAO is a scam, but I think its hard to argue that it's not a bubble. People right now have such high expectations of the DAO that I don't think they could be reasonably fulfilled in the short term, no matter the intentions of all parties involved. Long term it may be a good wager, but novice investors have a short attention span, and if gobs of money aren't made after the DAO goes live and these people start seeing high returns yesterday, they are gonna sell; and the price will fall sharply.
Pablo.