My suspicion is the motivation lies more in the domain of the MBA.
My father got his M.D. around 1930. There were no antibiotics. Except for surgery, most of medicine revolved around good bedside manner and hoping your patient was one of the 70 percent who got better on their own.
I have no illusions about medicine. It's a mess and always will be. There will always be a list of ailments for which there are effective treatments, a list for which there are statistically effective treatments, and a list for which there is bedside manner.
There is scarcely any disease -- even AIDS or tetanus -- for which there are no instances of spontaneous recovery. The ideal stomping ground for the quack is the ailment that has a significant percentage of spontaneous remissions. The remissions only have to last long enough for the patient to sign the endorsement.
"There is scarcely any disease -- even AIDS or tetanus -- for which there are no instances of spontaneous recovery"
Rabies. There have been a few "recoveries" that appear to be legitimate, but they were hardly "spontaneous".