Are you born an entrepreneur or are you forced into it by the economy?

Both could happen. There are people who know they want to become an entrepreneur and have the ability to execute their plans; there are also people who get into it and become successful because they have their back againt the wall. No matter which one you think you are, hope you can pursue your dream and make it come true.
Both. Dr. Ho is spot on. Entrepreneurs can be both born & made. Key ingredients besides your great ideas are the capacities to delay gratification, self-educate & ask for help. However, if you don't have the following 2 traits, don't bother: curiosity & dogged persistence. Therefore i'm mystified that more doctors don't self-identify as entrepreneurs, because getting an md requires the same things.