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.
I think that is too much. İ believe 70 percentage of altcoins will die in the future. But i cant say 5 percentage. Because i know there are too many good projects and they are really undervalued.
Generally all blockchain projects targeted solve some problems and all of these projects can be popular in the future.
We are thinking bad for 95 percentage of tokens because they dont have any working product yet but with adoption and with product i believe we will see altcoins will survive.