Interesting premise. I think this can get a really interesting game once theres more specific goals/scenarios. For learning the concept this sandboxy version seems fine. Took me a few minutes to get it, so maybe a tutorial on rails will be necessary as you expand on this.
For the art and flavor of the game you could do a lot of fun things with the capitalism theme. Make a news feed á la Cookie Clicker that describes events based on your actions or past runs. If you fail a run you get called to a board meeting where they fire you. Stuff like that.