If you include all the stay-at-home wives that do nothing but watch TV all day, you reach those 30% easily. Add to that the college students who only work part time. If you also include pensioners, kids and disabled you find out that only around 15-30% of the population actually work and support everyone else. And again, of those that do work, a significant portion is bureaucrats that have to be paid from taxes of people with a productive job.