Also, commercial insurers are essentially cross-subsidizing Medicare: the higher revenue from commercial insurers is partly why Medicare can be paid less. Similar dynamics exist with drug prices: the high US cost is a cross-subsidy to other countries. Maybe this is good (someone's got to fund R&D), maybe this is bad (it's a net wealth transfer to the elderly), but it's an important part of the dynamic either way.
Would like sources about the pharmaceutical sector being "subsidised" by the American system, heard it many times but haven't seen it substantiated.
The cross-subsidy argument is one hospitals use to justify high commercial rates: "Medicare underpays, so we have to make it up on commercial." The HCRIS data lets you test this. If cross-subsidization were the full story, you'd expect cost-to-charge ratios to be tight — hospitals would charge commercial just enough to cover the Medicare shortfall. Instead, the median markup is 2.6x across all hospitals, and 3.96x for nonprofits. That's not cross-subsidy. That's pricing power in a concentrated market.