We spend double, as a percentage of GDP, what any other rich country spends on health care, so that's not it.
You go to your doctor, who then tries to treat you. But then has to fight an insurance company who wants treatment that isn't in your best interests or isn't covered by the employer plan.
You get home and discover your Doctor is out of network. Pay up. You spend a million years fighting the insurance company.
OR your insurance is good, so the doctor says, what the hell I will order that test that is nice to have. They'll cover it. Costs increase.
Or you go to the emergency room, run up bills for the hospital and leave without paying. The taxpayer foots the bill.
And the doctors pay through the teeth for their degrees and want a big return. They earn more than other countries in a significant way.
All the incentives are out of whack and not in the public's interest.