That's the deal with pretty much all the 'alt coins'. BTC does not really have anything to compete with them as far as functionality/features. The main thing it has is that it is the most widely adopted and well known coin. If another coin could overtake BCT on that, then there isn't a great reason why it couldn't also overtake BTC in price. It is obviously hopeful / wishful thinking, but on the other side to completely count out a coin like STEEM simply because it is not BTC seems like a mistake. Also, there are a lot of places to use STEEM beyond Steemit.com. It at least has more widespread adoption than itself. BTC did not start out with widespread adoption either.