I live in Canada, and have to laugh at free market fundamentalists who claim that single payer monopsonies encourage over-consumption. When it's pointed out that Canadians actually see doctors less frequently than Americans, they turn around and conclude that Canadians can't get access to doctors.

I didn't say it couldn't work. I said that there are minimal (if any) benefits to a national health care system, as opposed to city, state or private systems. The economies of scale just aren't there.

As for overconsumption, the RAND experiment (as well as plenty of other statistical studies) shows that consumers will consume up to 40% more health care than they need if it is free (but not if they must pay out of pocket for it). Most likely your country either prevents this via other rationing mechanisms (which are politically infeasible in the US) or else you observed it but were unaware of it.