hmm I wonder if there might be a connection there... as other nation implement price controls a larger part of the R&D and the costs associated with that are born by the US
Further Medicare / medicaid price controls to keep the cost of the entitlement program from going bankrupt has transferred the cost to patients not on those programs
Third leg of this stool is standard of care, American patients have a high exception for standard of care then in "most other developed" nations where waiting months for a specialist is accepted as normal, or having ward style hospital rooms is normal as well. Where the US we expect must faster treatment times, and semiprivate rooms normally with no more than 2 people to a room, though 4 to a room has become more popular in some regions. This increases costs