I think that 95% of crypto coins and tokens won't survive and the reason is that a crypto coin in order to survive and get value it has to be accepted as a way of payment for purchase goods or services.
Very few coins will manage to do it at the end of the day and of course these coins will get enormous value.
The only thing you have to do is to find out which coins will enter the market of real currencies.
Not all are going to survive and only those useful altcoins are going to surive in the future,those platforms like ethereum neo,etc are going to be exist few decades if most of the countries has already accepted cryptocurrencies,and theres no doubt on it We should be doing our best to adopt this technology so we can be more wealthy in the future.