There is a possibility that many altcoin projects will die out in the coming years, but there will remain truly worthwhile projects whose price will be very high
The number of altcoins is always close to 1600 the last months. maybe, with time, some of these alts will really die but the other cryptocurrencies will be invented. The digital money will never extinct.
Some bad ones will be eliminated for sure. But this is not like all of the altcoins will die in this ecosystem. Altcoins will survive but some bad ones will be removed from the market. Trust me this will be better for us.