America spends 18% of GDP on healthcare. Other developed countries spend 6-9%, yet mostly have better health outcomes. So if we become as efficient as them, 1/2 to 2/3rds of healthcare workers will be redundant. What interest do they have in destroying their own jobs?
Those last two sentences don't automatically follow from the first two: maybe America spends so much because prescriptions are so expensive, or maybe the cost of insurance/lawsuits is unusually high, or maybe plain old fraud has a major impact, etc.
It'd be interesting to know how many doctors, nurses, and other medical professionals there are per capita, in America and in the countries compared against.