> since people don't have to cover physical electricity and GPU costs anymore it also means that the rewards can be much lower The amount spent on electricity

> since people don't have to cover physical electricity and GPU costs anymore it also means that the rewards can be much lower The amount spent on electricity in PoW is determined by the reward not the other way around. And from what I gather the same applies to PoS, except that, instead of spending electricity, virtual tokens must be deposited somewhere, but again the amount that will be spent on these tokens is determined by the reward that the depositors expect to get.