I'm sure the army of middle been between patient and doctor have nothing to do with it.
There's no logic in what you're trying to argue. Healthcare providers charge for their service, insurance companies negotiate that cost down, next to risk management that collective bargain power is the reason you buy insurance in the first place. Again if what you're saying is true all you'd need to do is just buy your healthcare from the hospital directly, if you end up in the ER take a look at the bill and tell me how that went