There is a chance for everything, u never know wether some radom people will buy a lot of bitcoins at one time and get the currency to the point of collapsing, this because people will see its price is low and will be buying it massively unitl there are no more, so my conclusion is that its own fame will kill that currency. Also maybe creators may take out some more bitcoins to the market making it globally used for normal/common situations, remember there is always a chance for everything.