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?
POS is more convincing now, just look at big projects like Ethereum will leave POW and switch to POS, because POS is really liked by investors and users, many coins do staking programs, like XTZ and Waves, if Ethereum has a staking program it will be interestingIs 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?