Bitcoin will crash or cease to operate if every miner stops the mining process. Thats the only way I think can stop bitcoin. But since its decentralized there is no way we can do that. In centralized things its possible to stop or manipulate since you have complete control over the process.
And to add for this, when all the supports coming from miners, investors, traders and users will no longer be inherent. It could be an odds to see like that but that is the only way I could think that it stops crypto. But, are we letting this thing to happen? Definitely, not, in fact, we even supportive to the market even we struggles so much difficulties cause we believe that this could help us to our life and our future.