There are only 70k daily active Steemit users. We still have a long way to reach Facebook's userbase. I think that as more people join Steemit,most of them will biy at least a few STEEM to power up. If not their content will be hardly visible beside their circle of friends. Unless they produce really high quality content that gets noticed by a whale.
RE: Steemit Crosses 800K Users! What Does That Really Mean?