I am sure crypto will go long term.many altcoin in cryptomarket already have product and customer. Development in cryptomarket rapidly growing fast and its attracting many big investor or big company to launch their ICO. I am still believe that market cap in cryptomarket will rise.
Demand is something that would be fueled by development and I believe as we move on in this space, this is something we are going to get to see. One thing with mainstream adoption is that bitcoin must have been able to attain the stage where of course it can easily be used at that level, and with the way things are going with scaling; I want to believe we are getting there gradually. It is just a matter of time before we end up seeing some real and huge adoption.
we also have to take into account if governments start with their own cryptocurrencies or if they start banning free cryptos...
Government may introduce their country specific cryptocurrencies and also they may ban major coins still overtime they will realize the importance of having bitcoin as a decentralized currency for the sake of individual's basic rights. That is the reason, crypto will win in long run.