Pretty good comment, in my opinion you are mostly right. The M.D. "guild" restricts access to the profession. To some extent, nursing takes over much of the routine health care work, with usually overworked licensed physicians supervising oversight of the health of a large number of "patients" (who are really just people). Malpractice lawsuits employ lawyers, and insurance indemnifies the physicians and their practices.  So Insurance takes a double cut out of the healthcare pie - once to insure people, who get sick; and once to insure the practices, clinics that take care of people.

But if you think that insurance will take care of everything, you are asking the problem to fix the problem.  At the very least, government oversight is required. There would still be room for private enterprise, just not total control.