Don't think so. These days, I always see some kind of adoption or progress in cryptocurrency world, if it was otherwise I would say it is going to zero but that is not the case.
Crypto's success will largely depend on mainstream adoption for sure. Right now, there's huge volatility in prices making crypto terrible as a serious form of money for the world. There's fear among people that someday, crypto will become completely worthless because of their lack of use cases within the mainstream world. The situation will become worse as governments start rolling in their own Blockchain-based solutions within the future. Once Fiat adopts Blockchain technology, then there might be no use for alternative currencies after all.
Most decentralized cryptocurrencies these days are largely driven by hype/speculation. I believe that only Bitcoin and Ethereum are useful for the world, but they're still inferior to traditional payment processors. The more time they take on scaling, the worse it'll be for their mainstream adoption. And the lesser adoption there is, the lower prices will be for a specific cryptocurrency (due to lack of demand across the crypto market). I hope that I'm wrong, and that sometime in the future, cryptos like Bitcoin and Ethereum will take over the world.
Nonetheless, what's needed is proper regulatory measures in order to legitimize the crypto industry more thoroughly. Once that's done, then crypto could enjoy stable prices like Fiat. Only then, it'll be nearly impossible for crypto to go to zero, as there will be an already-established market that's trusted by investors worldwide because of its approved legitimacy by governments worldwide. Just my thoughts