1. Number and Quality of Investors - If and when Steem gets the attention of many famous multi-national companies in the world, then the overall price of Steem will definitely increase and will eventually price will stabilize at a reasonable level.
2. Number and Quality of Users - If you've heard of Metcalfe's Law before, it states that the overall price of a network exponentially increases as more and more users are on it. If Steem solves and increases user retention in the platform then it will for sure increase the value of Steem in the market.
3. Getting rid of Fear, Uncertainty and Doubt - Personally I think this is the major reason why crypto is not advancing that fast as we hoped. Blockchain technology is revolutionizing but governments, private entities and media are doing the best they can to spread FUD's to people to prevent this technology to be adapted worldwide as it poses a great risk on their businesses.