PoS are not profitable. I can earn around 0,1-0,5% more coins yearly with Waves.
Even other PoS token are not the best and I don't think this they are profitable since coins can be overproduced and then depreciated on the market.
Bitcoin Proof of Work Mining is too expensive and there is no profit in it, unless you are Mega Rich to start with.
Only Way the little guy can make money is staking.
In PoW mining , you have to be mining all of the time so you don't lose out.
In PoS Staking, you can turn your PC off for months at a time, and turn it on for a few hours and receive almost the same reward
(short compound interest difference of course).
Also in Staking, there is no need to buy new hardware every year or pay really high energy prices, a substantial price savings.
In addition, Staking has a higher scaling potential than Proof of Work , according to Ethereum founder Vitalik Buterin .
Which is why Eth will eventually drop PoW in favor of PoS.
Hopefully one day Bitcoin will do the same, so the little guy has a reason to own it again.
One of the Major complaints by Warren Buffet
(one of the top ten billionaires in the world)https://cointelegraph.com/news/warren-buffett-bitcoin-is-a-delusion-that-attracts-charlatans“You can stare at it all day, and no little Bitcoins come out or anything like that. ”
If Bitcoin moved to Staking, then little bitcoins would come out ,
and that could potentially draw in the Billionaires to invest in bitcoin
and make the 1 bitcoin = 1 million not just a hope , but a reality.