Yeahhh I don't see Steem dominating social media. Places like Reddit and 4chan are a hive of activity for a reason. Unless I suppose there's a way to get paid anonymously? Dunno.
I see the end of 2018 being boring, with no revolutionary use cases really emerging, just solid use cases that aren't recognised as revolutionary (like MOD etc). I reckon we've still got a few years to go before the new paradigm emerges.