The thing is...when that fracture extends into the joint capsule, or is in multiple pieces and needs a surgical repair, you'll want the doctor around to manage that.
When that flu weakens your immune system and causes you to get a superimposed bacterial pneumonia, you'll want the doctor around to manage that.
The days when a doctor could make a living managing only simple problems are long gone, if they ever existed. These days, PAs and NPs handle the majority of healthcare's equivalent to CRUD applications, and physicians handle the complicated cases.
I have noticed that it's become popular on HN to refer to parts of the healthcare industry as "rent seeking," and while I agree to some extent, I haven't seen much evidence that doctors or medical schools themselves are rent seeking.