I'd think that crypto currency and blockchain is independent with each other. Blockchain technology is just a means of distribution, record and other good stuff that could be applied to other things not just crypto currency. I just hope that we see more and more innovations on both crypto currency and blockchains.
Cryptocurrency is not going anywhere that we should clear right now. Cryptocurrency will still be around for a long time even after the technology will go beyond blockchain. However right now there are a lot of banks and companies that use blockchain technology as a new improvement to the current system they have and they can use it without using any type of cryptocurrency with it.
They are not hand in hand type of thing. Of course all cryptocurrencies as based on some blockchain however not all blockchain software has some sort of crypto backing it up. It is kind of like all thumbs are fingers but not all fingers are thumbs. The clear idea here is that blockchain is a new better technology and everyone uses it however crypto is not loved as much but when technology moves past the blockchain and finds something better the cryptocurrencies will still be around.