There are always information asymmetries. Walmart knows a lot about it's suppliers, but the suppliers still know more about what there selling and how much it costs them to make it.
A better breakdown might be insurance as it completely destroys the concept of a market though a dramatic subsidization of coverage. It would be like your company buying your car for you sight unseen. Sure, you want a nice car(heath outcome) but you have a lot less incentive to research BMW vs Acura resale value as your not paying full price for it. So after minimal research your far more willing to go along with what the sales guy(doctor) says.
A better breakdown might be insurance as it completely destroys the concept of a market though a dramatic subsidization of coverage. It would be like your company buying your car for you sight unseen. Sure, you want a nice car(heath outcome) but you have a lot less incentive to research BMW vs Acura resale value as your not paying full price for it. So after minimal research your far more willing to go along with what the sales guy(doctor) says.