Just to be clear: You're asserting that the average citizen
* has the same capacity to research an unknown number of medical procedures and the doctors performing them as they do researching onion prices or CPU specs
* faces a similar scale of consequences when failing to properly analyze medical procedures as they do when they fail to properly price-compare onions or PC services
* has the same freedom of choice to "purchase their preference" in an emergency, life-threatening situation as they have when shopping for PCs or groceries
Dietary and metabolic problems are an epidemic that outweights malpractice in terms of quality and quantity of life by more than two orders of magnitude - so yes, I am saying people face "shopping problems" of life or death magnitude every day.