The demand for zk-prover hardware will be no where near the same extent as for pow miners. Those zk proofs only need to be generated once, by a single party, an

The demand for zk-prover hardware will be no where near the same extent as for pow miners. Those zk proofs only need to be generated once, by a single party, and then they can be verified, easily and cheaply by anyone with minimal hardware. There isn't anywhere near the competitive rat race to accumulate as much hardware as possible.