Well, not necessarily. I mean, yeah it would probably take a ton of cash, but think about it like this - there is only a few slices of pizza left in the box.  If someones super hungry and wants a slice, they would totally pay more, right? Even if the first few pieces went for dirt cheap, the price skyrockets for those last few precious slices.  Bitcoins got a limited supply too, so same idea.  More peeps trying to buy in, particularly the high rollers could make the price explode.