As the market becomes more saturated more users are turning towards the top two crypto coins and those who had already invested into other altcoins have starting shifting their funds towards Bitcoin and Ethereum as other altcoins have failed to capitalize the market. If this continues then how will altcoin survive? is it just the matter of time or something which altcoins need to work on by working on the missing link.
By default most have to die off. They literally offer nothing more than what is currently out there. I do think niche coins will exist it's just the amount of coins that has come out in the last couple of years is not sustainable or needed. There is definately space for more than just bitcoin just not all of them, nor do most of those coin developers have any intention on them succeeding