Now, many countries have this problem solved – for now. As the population ages, the solutions may have to change everywhere.

What I find interesting is that the discussion is almost never framed to address the actual issue: the medical industry in the US simply overcharges with impunity. I was shocked to discover that labor (as in, doctors) isn't even the biggest line item in many (most?) medical bills. Hospitals and clinics will simply crank the bill sky high and then have you or the insurance try to haggle it back down, sometimes at a 3 or 4 digits percentage difference. It's insane. There's also zero transparency on pricing, so it is difficult to shop around even if you have the time.