That's weird because in every other OECD country that offers "free" healthcare (as in, single-payer or two-tier with national option) it's dramatically cheaper and has much better outcomes [1]. Reality doesn't line up with your pre-conceived notions.
What do the obesity rates look like in those countries? You cannot compare a country like Sweden or Finland to the United States when they have completely dissimilar obesity rates, the main driving force behind healthcare costs.
If you’re solely using obesity as a comparison point Canada is just slightly behind in obesity but health costs are one half. The NHS while strained costs one third of what the US system costs. You could add the per capita spending of the NHS and Canada together and just barely be in the same league as the US incredibly inefficiency system.
Y’all better be hella fat if that’s the justification you’re using.
[1] https://www.oecd.org/unitedstates/Health-at-a-Glance-2017-Ke...