Doctors will never retake control of medicine because we are not as ruthless and cutthroat as all the other stakeholders in the system. They play the political games and are willing to put the best interests of the patient secondary to profit, which few physicians are willing to do.
It's not just the insurance companies, there are the hospitals and pharmaceutical companies as well. The amount of money spent on drugs per patient is about the same spent on PCPs, twice as much goes to specialists who have much less contact. What is wrong with the system???