I am not so sure about that, as long as the technology continues to function.
Rather, I think we will see a more-or-less complete changing of hands... From those who abandoned Bitcoin for one purpose, to those who adopt it for another...
I suspect as much. It's a big world, and Bitcoin has certain usefulness regardless of the price as long as the exchanges remain viable (which is, to me, a big question mark.) Bitcoin is great for funding out-of-favor efforts which mainstream financial institutions have cut off (like efforts to change the financial institutions, for instance.) It also seems to me that it has some usefulness to 'ratchet in' a large trades between non-trusting parties though I'm not aware of that being done in a systematic way. And, of course, good old fashioned money laundering could be helped by some of Bitcoin's properties.
I expect that these uses will eventually set a floor on the BTC price, and if such use grows (faster than inflation), so to will the floor. The rapid re-cycle would put that floor pretty low, though.
Although I keep a position in cold storage on the long-shot bet that a disruption of some sort will cause a spike, and some slightly more complex but wholesome longer-shot hopes as well, I've kissed goodbye the actual USD's I've put in as well as the remainder that I have earmarked for BTC purchase when the price falls some more.
I do tend to snap up some BTC on the exchanges when I want to donate right away to some effort.