One sticking point in my mind is that people always seem to conflate our pharmaceutical and medical technology industry with our healthcare and health insurance system, which are different areas completely.
They think that if we don't have the expensive, privately-held bureaucratic system we do, then GE can't charge what it does for its MRI and CT scanner machines and exit the market, and then Grandma will die a horrible, painful death in a ditch outside Waukegan. Or, if pharmaceuticals don't charge insured patients $10000 a dose of some new drug, that our system will collapse because no one will make medicine in America ever again (never mind that 5 of the top 10 largest drug makers are outside of the US in countries that have abundantly socialist healthcare systems).