Well demand is the most important things that could drive the price of cryptocurrency, a coin without demands would make the coins useless and worthless. Supply is good for developments of price the more scarce of the coins the more valuable the coins is but still demands is the most important thing than supply.
We have to consider both supply and demand for the coin in order to increase it's price when the developments kept going on. We should also consider how far the price of the coin will reach if there is a huge demand for any coin and some time it is impossible to predict how much the price will increase.