That is, the case for single payer that some libertarians could also support—and that's because it's also the case for radical deregulation of the health care sector. The trick, as Arnold Kling argues, is to do both:

I would like to see more experiments and more variety. Instead of having a big national contest over what health care system, why not try single-payer in one part of the country and radical deregulation in another? Switzerland, which is about the size of Maryland, has different health care systems in each of its 20-odd cantons, which are about the size of Maryland counties. Surely it must be possible to try different health care approaches in Texas and Massachusetts.

I'm obviously wary of socializing medical payment, even at the state or local level. But given the opportunity to see single payer compete against a genuinely deregulated market, I'm pretty sure I'd bite. And I suspect a lot of single payer supporters would too. But that sort of political competition isn't in the cards. Instead we're stuck with a broken, compromised system in which neither side gets what they want: On one hand, the government controls nearly half of all medical spending, but failures get blamed on the free market. On the other hand, those who want to sweep away the current system and socialize medical insurance get stuck with messy legislative compromises larded with handouts for special interests. You could make the Beltway centrist's case that this is a good thing—that political systems shouldn't cater to extremes. But in this instance, we've got a system that's catering to almost no one. And in the meantime, we're stifling innovation and experimentation on both ends of the political spectrum.