I don't mean to be derogatory in any way, and personally I like the STEEM concept quite a bit, however I see the market price of the coin continuing to decline for a number of reasons:
The dilution is very high. About 800 coins are generated every minute (1.15M per day). Granted, 90% of every newly generated coins go to STEEM POWER holders, so they are protected a great deal from this inflation. However, the overall inflation rate is a significant concern for investment purposes. A lot of folks that are truly just investors in cryptos are doing so as an overall monetary base inflation hedge. There are significant and unknown risks stemming from the inflation being seen in other, um, more traditional "assets" around the world, which are showing some inflation "strain" (to put it nicely). So an asset with significant inflation doesn't really fit the bill.