In my personal opinion only few coins like bitcoin, ethereum and few other coins will last that long, all other faster then bullet, partnership coins,and many other shitcoin will die. what you think?
A majority of coins die right after they are listed on an exchange as the bounty hunters sell their coins and dumps the coin to its death so no one else buys that coin and this makes the coin dead in just a matter of few days after the launch on the exchange. So there won't be so many coins in the future as there are currently as the ICO trend is also coming to a halt.