I think a lot of altcoins will survive.
What is future to you? 1 year, 5 years 20 years? and what are you calling survive?
I think all coins who are now over a 1 million marketcap will be also popular in the future, some more some less.
Yeah I also think a lot of altcoins will survive. Because when one goes up, one goes competing. They won't let themselves vanish in the currency world for sure.