There is of course also the situation with the dot com bubble. Yahoo was first but Google overruled it later on...
Blockchain is indeed probably here to stay. But it's still a matter of understanding the real value of some currencies. To me it's not clear which ones are here to stay...
There's the believe in a general concept but that has to be matched by actual implementations.
E.g. I'm a believer in this decentralised content concept. I don't know if the current implementations will survive.