Well, if you are not from around here :-), the calculus is simple. The healthcare "industry" manages to levy anywhere from 4 to 6% tax on the GDP of the wealthiest nation on Earth, and instead of giving that tax to the Government it goes to a handful of individual corporations.
That wealth sucking monster has its tendrils deep into every PAC and politician it can find. And like a giant organism that wants to survive. It employs hundreds of thousands of people who insure that the status quo, remains.
Even people who aren't employed by the beast but are wealthy hold large quantities of "stocks" in the beast so that they, like small trigger fish on a shark, might benefit the wealth that spills over as the beast munches at the trough of human despair and disease.
Yeah, it's a bit cynical, but I swear every bit of it is true.