That won't happen because there will never be a shortage of fools and degens who will buy crypto. Same reason why gambling will always exist. Crypto is better at attracting speculators because it's not as constrained by regulations and even if price drops 80%+, people immediately start telling themselves "I'm in it for the technology and/or social mission" and this keeps them HODLing until the next bull run.

Stock investors tend think more like "This stock just dropped 80%, I have to cut my losses. Bye."