Yes I'm convinced that many altcoins will die osomeday. You might ask why and my answer is simple, because many projects have basically no use case at all while some are not even brought forward anymore due to a lack of developers or other reasons....
It's honestly just crazy to see that some of those projects are valued in the millions without even having delivered a single thing on their roadmap. It's nothing else than pure speculation by some people that keeps those tokens alive.
That being said I sometimes question the investment skills of some people within the cryptosphere. I mean why the hack would you put any money into thin air? Into something that doesn't even exist neither show any progress on github after all?
I personally am therefore only investing into products that show some progress and are actively engaging with the community about it. What's your approach on selecting the tokens you put your money on?
There will always be projects that will not succeed in the future but not all will fail. That is why we can associate these ICOs to gambling because we don't know if the project you into is going to succeed. I have observed that even if many ICOs failed but still many are still investing in new ICOs maybe because the profit is good whenever they participate in ICO that will succeed.
That is why it said that as soon as the said invested ICO get listed in exchange immediately sell it on any profit because surely you will get back in low price that time you can buy back from the profit earned if the coin project is good. Like this you can be safe and investment also get safe.