With the exception of one year after school, the president is a career government employee. Stops as a community organizer, civil rights lawyer and law lecturer don't count for private-sector experiences. They were merely steps to bigger government jobs.Read the rest here if you haven't already clicked the link above.
BTW, most of IBD is behind a pay wall. If you like accurate business news this paper, including its online version, and the Wall Street Journal (also mostly behind a pay wall online) are your newspapers of choice, although the latter's news pages tend to tilt left.