I think by 2020, about 99 percent of altcoin is going to die, because their value is just speculation, but nothing.
BTC will probably become an altcoin in a few years, since its main value right now is speculation, to be honest.
Oh really you seems worst ICO preacher here. Whatever the altcoins comes in the market you would see the other coins in the platform bitcoin. If you check the coinmarketcap you will find the all the altcoins in ethereum platform only buddy. None of the altcoins will not be touch the scratch of bitcoin in the technology.
Because of bitcoin and satoshi only you guys are seeing the all the altcoins now in the market so anytime under estimate the bitcoin and keep it mind always.