One of the reasons I'm bearish on Bitcoin in the long term is there are systemic risks like this around miners.
The other difference is Bitcoin is less like a currency and more like baseball cards in how people are using it. It's already failed as a currency because its price is too unstable.
Risks strictly related to PoW, hashrate volatiliy, or "51% attacks" are not existential by any means. We do know how to mitigate them and multiple examples exist how altcoins managed to survive such attacks.