Is Proof of Work is going to lose popularity compared to Proof of Stake? Ethereum is going to PoS.
Is there going to be a lot of hash (computational) power idle because of shifting to PoS?
Where that power be used then? Will it address such decentralized computing projects as Golem, Storj, Sia, etc?
This question has been getting asked since 2016 when ETH was suppose to go POS in Summer 2016 and we are still waiting for the transistion.
Basically, if it goes fully POS then you can't mine ETH anymore. So all that hash will need to shift to other mineable coins like XMR. The problem is that ETH has a large daily miner reward that no GPU mineable coin at the moment can reach, so most likely every non-ETH GPU mineable coin will have huge difficulty increases and nothing will be profitable to mine and everybody will just turn off their rigs and sell their GPUs in eBay.