I think all the coins will be able to survive and this also depends on the development team. That is expected in future coins will have a very high value. And you will not be disappointed by storing your coins as long as possible especially for coins which do not have a value. 
But you also know that it will not happen. As I see it, at least 30-40% of the tokens will vanish in less than 2 years. That is why it is recommended to pay attention to some stable alts like DASH and Monero.
It is likely that at the same time 100% new worthless coins are getting created during this time, so we will rather end up with more and more coins rather then less. And for newcomers it will get even harder to filter through the trash.