The market seems to be leaning in favor of the higher costs of POW, which lead to higher transaction costs. At least as relate to BTC, as a story of value. For a store of value, no one wants to take any risks with DPOS.
For a blockchain that is supposed to economically competitive with non-blockchain alternatives, lowest cost per transaction is probably a highly valuable attribute.
Hence the decision for ETH to move off POW and move to POS.
In the end we may only have one blockchain as POW, BTC. All the rest are probably going to be better using some variant of POS.
the market is leaning in favour of the token that is changeable for any currency in the world, directly. as soon as a better system comes into play, that is also changeable for any token, and any fiat, btc will falter. they people aren't leaning in favor of high cost POW, they are leaning in favor if liquidity. if you could go to bittrex, or whatever flavor exchange, and turn steem into usd, or litecoin, or ethereum... many more people would use it.