Some miners may do so, but I doubt any other participants in the network would favor such an action. The separatist miners would then likely move to mining on a forked chain like we saw in 2018. The original chain would see a drop in hash-power for a little while until new members begin mining on the original chain and bring it back to a happy equilibrium. The new fork will then be forced to compete head to head with the original and lose due to the substantial head start of the original Bitcoin. Most fork miners would then move back to the original or go bankrupt.