Yes, they die when the devs started dumping their tokens and leave the investors hanging while holding a bag of shitcoin which will never gonna pump since the devs left. Although there are successful altcoins out there that I can see is worth it, I guess not every coins got lucky for having an investors and a dev who continue to support their own creation.

I wonder what another type of ICO, IDO or some kind of hype will they be using next time like how they used DeFi nowadays?
I hope they would bring an innovative technology that would help the community just like how we use Ethereum and other altcoins.