I think there isn't much point in trying to guess what will happen. It's going to be more dependent on behavioral economics rather than purely rational values. If bitcoin were an actual currency, it can fulfill the same purpose regardless of whether the price is high or low, and driving it up as an asset, makes it hard to be a currency. Given that there are also so many other alternatives, Bitcoins' main advantage is really first mover advantage, and it's hard to say how long that would last.

We've already seen in previous rise and falls, that bitcoin has been driven greatly by speculative demand.