Hi,
In my opinion following are the reasons:
1. Business involves more risk : Most of the time Family trend leads a person to make money rather than investing at early stages of career.
2. An Approach : Few think, before going in to entrepreneurship they must have people skills, vision and tenacity.
Further to that, some of these remain continuing and get satisfactory life long results and few move towards business-ship later on, utilizing their experience and get monetary returns in the long run.
:mod: