While its almost impossible to predict the future, particularly with an evolving subject such as crypto currencies, this article by Panos Mourdoukoutas attempts to do just that and while thinks that the current patch of crypto coins (Bitcoin, Ethereum and Ripple etc) may we have dissapeared he seems confident that blockchain technology is here to stay. I certainly feel that blockchain technology has too much to offer to so may industries for so many reason that ot is here to stay and will continue to evelve into a much strong platform Panos thoughts are worth a read. https://medium.com/forbes/where-will-bitcoin-ethereum-ripple-and-other-cryptocurrencies-be-twenty-years-from-now-27763f5f0cbf