It sounds more like the internet than a railway line.I must stress that I agree entirely with this assessment. It's very much like the 1846 railway mania. The mania soon popped, but railways remained (and remain) a valuable resource. Over long periods railway undertakings have values that reflect the usefulness of this technology, and the revenues which it secures in the transport marketplace.
If blockchain turns out to be as useful as you suggest, as well it may, it will retain a value too. But it will nor jump from cents per "token" to tens of thousands of dollars, unless it becomes the pretext for yet another speculative bubble.
We should maybe consider what an "internetcoin" is valued at.
Hang on....