I think with STEEM it is simply a lack of exposure, Most people do not know about it. This could change with some things like SMTs.
I hold BTS....it was a bit concerning to me but I understand their point. That said, I am bullish on BTS for the reason that @stan has been promoting....there is a good chance that EOS is used to help BTS. EOS, from what I understand, can be applied to any blockchain...it is more like an operating system. I could be mistaken about that though.
Overall, I am uber bullish on STEEM. When it is discovered by the masses, we could see quite a move.