I do believe that the skill is something your born with. The reason for that is the stats that coma long with businesses and startups. With many failing within the first year, three, or five. There is something special about the true entrepreneurs who were born with the talent. There is a different drive and thought process. I deal with startup businesses on a daily bases and there are definately a difference between ones that will be successful and ones that will fail. You can see it as soon as they walk in the door.
I still think it's mainly because of a certain mindset and personality that one is born with rather than a chromosome that'll determine everything. There are so many factures (including the nature/nurture stuff)
depend on how your family raised you and how your family make money and your environment. IMO sometime we are raised in family that starts business and successful so we go toward that. but if they fail then we go away from that. and if family is always someones employee then we do that because we are comfy with that mindset.
A lot of people get into business even with families who are completely unsupportive and from families with no history of entrepreneurship. And plenty of people with entrepreneurs in the family have no interest whatsoever in continuing the family business or starting their own. It's in the individual... not how they're raised. You're either independent-minded enough and ambitious enough to make it happen, or you're not. That's in who you are... it's a basic personality type shared by most entrepreneurs; not something that can be learned from family or anyone else.