Plenty of counties also provide market healthcare with private insurance without the American issues, e.g. Switzerland [1]. If we want to keep a market-based model, there are reforms that point the way forward.
[1] https://en.m.wikipedia.org/wiki/Healthcare_in_Switzerland
Lots of countries in South America have a lot more problems than healthcare. Maybe consider their per capita GDP or something to offset that fact.
Even with that, Costa Ricans, Chileans, Cubans, Panamanians, Uruguayans and Colombians have longer life expectancies than the US, which manages to be 54th in the world while spending about as much tax money per capita as any other country does on healthcare.
If you can't make the VA model work in America, that's good evidence that a bigger model would suffer the same, but bigger problems.
I'll add: it feels like the veterans are begging the VA when they should have that basic human right by default.
Ah, so that's why wholesale prices are so much higher than retail. Diseconomies of scale.
And if you can't make it work in America, the country with the most screwed up and corrupt healthcare in the world[*], how could you expect to make it work anywhere?
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[*] It's a big claim, but I don't know how else you refer to a country that spends twice as much on healthcare per capita than any other country, but comes in 54th for life expectancy, while being the main cause of bankruptcies.