They affect health by creating enormous numbers of new fields for research and medicine, which after patent expiry is generified and manufactured cheaply for eternity.
You can have medical research without charging $1000 for an ambulance ride, $10k - $20k for having a child, $100,000 for staying in the hospital a few days. Those are the things I'm talking about.
You can, but these are complex systems, where some areas will have a profit incentive and be efficient, and others just mired in regulation, either directly or in a way that prevents competition arising. I don't think anyone deliberately built that hill. It's made up of lots of awesome hills and lots of hideous quagmires.