Yep, that is a slogan. And Steem is "the blockchain of opportunity" if I'm not mistaken.
Frankly, I don't believe in prosperity for all. But I do believe in opportunity for all.
But again, both are merely slogans.
We will see what happens. So, what is now in the making (or at least in the declarations)? Steem 2.0? BitShares 3.0? Using simple logic, when will we see EOS 2.0, with @dan on a different project announcing it?