Individual altcoins may and will die, over 90% of them will never amount to anything but a good speculation tool for trading. But I fully believe the best ones will emerge in time and find actual real life use cases. And they all serve an important purpose in testing new ideas and developing the tech, while making all of us more btc on the side
Well, just the same situation as with startups: only a small portion really takes off. But that does not make the whole segment useless or having some really poor perspectives in either case. I agree that altcoins have and will have some role here.