_Doctors can't get jobs because so many people are vying for the same jobs it's difficult to even get a specialty. Nobody will hire you without a specialty._
Source? There is a huge demand for primary care doctors right now ( source: http://articles.washingtonpost.com/2013-09-06/national/41812... ), and anecdotally, I work for a company that runs primary care practices and we recently hired a recruiter because we are having trouble finding the handful of doctors a year we need to keep growing.