What we need to take into account,is the competition for steemit @dan is developing with EOS. Sort of like a social media on top of the EOS blockchain.
When the time comes, we need to take into consideration that project, and see which one of the 2 is the best.
At the beginning steem will obviously have the first mover advantage, but if EOS technology is superior then who knows what can happen in the end.
Not to mention if he fixes the distribution and incentive problems that steem suffers from, then the new social media platform would have an enormous advantage.