On the other side, regulated and registered exchanges will be popping up soon, making it easier and safer for people to enter bitcoin through 'normal' channels. If that money comes in, it may become huge.
a lot people can already easily buy and sell bitcoin without problems. regulated exchanges won't make loads of people buy just because of it being regulated. it's a nice bonus. nothing more.
not to mention that exchanges are dumping also, i doubt they keep the total bitcoin revenue just for the sake of waiting the next bubble, until the demand is not stronger than the supply the price will remain there