I like the idea of the game. However, the pace of the game should be slowed down. There is no time to read before you can take action, everything happens so fast which makes reacting to the events appropriately hard. I believe that a turn-by-turn style would allow the game to be more thoughtfully played.
There is a simulator called Mopos 3.0 which is similar to the game you developed. I believe there are some ideas there that you could implement in your game. Like supply and demand, and how they would change according to the interest rate.
I frankly believe there is a lot of potential in this sort of game, not only for fun but also for educative purposes. I appreciate your effort in it, and keep it up!