Well the point of proof of stake is that you don’t need the excessive wasted cpu power to prove transactions. So the whole concept of big expensive mining opera

Well the point of proof of stake is that you don’t need the excessive wasted cpu power to prove transactions. So the whole concept of big expensive mining operations just evaporates for coins that use this. Proof of work (bitcoin) will always have them though. The lower bitcoin price will just wipe out the viability of a lot of miners and hash rate will decrease globally. At that point the network will adjust the difficulty until the target block rate is reached with the remaining miners who can afford at that expected payout.