Easy big money at taxpayers' expense !
Probably most are self-employed so doesn't really count as a 'job'. Same with some of the others listed in the best jobs.
Actually they are running businesses or are partners in the business (Dentist, Actuary, Lawyer, for example).
I did the same in sales for many years...self-employed agent.
You then control your own income and work conditions, for better or worse.