The alternative to crash is inflation and raise of productivity that is happening now every day
That said I don't believe in a big overnight crash
I believe that crypto currency will slowly gain the trust of more and more people
But not because of the actual coin
Blockchain technology is the secure base for many interactions and transactions worldwide without a middleman
There will be lots of new services and this new useful apps an so on will bring the people to use crypto coins and the blockchain
There will be competition between the different ledger and the one with the best service will win in the long run
So where are the best applications with real blockchain security because there is lots of not so secure systems out there where companies and small groups of investors try to manipulate and influence a blockchain
It will take some time until trust is built and the real secure blockchain will disrupt and renew the whole internet until then lots of speculation will happen and people will try to get rich quick
The real winners will be the guys who bring good services with blockchain security to the people