As far as Bitcoin as a market: I do not think that Bitcoin will fall below $2/coin again. I also think there will be some rising price as the block reward cut approaches, followed by a slight price slip once it occurs (in typical buy on rumor/sell on news fashion).

As far as economies in general (including the Bitcoin economy): I think two years is not long enough for Bitcoin to become the primary mode of exchange in anything but a community specifically engineered to use it (e.g. the seasteading stuff miscreanity mentioned, if those projects actually get off the ground). Similarly, I can't take theories of "bitcoin outlawed" or "USD collapses" or similar seriously in the context of a 2 year timescale; unsustainable things are being done, but we are a long way from the point where they can no longer be propped up civilly.

Frankly from what is out there right now, this looks no more credible then Steorn (which claimed to be a first-order perpetuum mobile and turned out to be a lot of hot air and magnet superstition).

I mean, good on them if they managed it, but I have serious doubts.