The article is quite over-simplified. Yes, those are some reasons, but I would bet it has as much to do as what you were exposed when younger. A kid whose dad

The article is quite over-simplified. Yes, those are some reasons, but I would bet it has as much to do as what you were exposed when younger. A kid whose dad played quarterback in college has an easier time playing quarterback in youth football because the dad has "been there:" knows what it takes, how to approach it, etc. For someone with parents doing shift-work or working in a bureaucracy, who grew up with no exposure to what it takes to run a business, there is a huge intellectual/emotional hurdle that is hard to see over, making it difficult to jump.