Right Bitcoin, Ethereum and Iota are adressing unique usecases which simply cant be adressed with centralised approaches. DPOS chains like Eos and Steem are hybrids, there is a focus on the social aspect (which runs perfectly on centralized platforms) but ^theoretically they can also tackle things like off-chain payments for Bitcoin. On Eos you can process Bitcoin transactions and they work it out. Same on Steem. But as you said, there is no initiative and no development.

Sure they have implemented rocksDB, so do Nebulas, IOST, Hyperledger (I thing also the IOTA reference implementation includes rockDB, not sure)..and many others run on levelDB. Its not a competitive edge. It reduces costs, but this does not translate into anything but more income for top block-producers. When you reduce the regulations for running a political party (e.g. you need only one person and no financial hurdles) does this change something to the parties actually sitting in the parliament/Bundestag? No, because the bottleneck for decentralization of the social layer are not the costs, but the initial distribution of resources like wealth. Its still the establishment which is in power.

In my opinion the price of steem will probably rise way up in the next bullrun, but the price of eos potentially will rise up much more, when meos will be that good, and for me it seems, that meos will be f'cking good.

you think the price will go up significantly? Yes meos will probably have a nice user experience for mainstream-users, the question is the privacy aspect and if there will be a niche for more complex content like articles. If it can be both a great investment (attractive for masses) AND also interesting for nerds and tech people...hmm lets see.