It's funny how there are healthcare systems so much better practically everywhere else; yet, somehow in the US, it's impossible. Yeah, right.
It's impossible for path dependent reasons. If the US had adopted a different system in the 60s, then we'd be in a very different place. But because we've built up this infrastructure of an extremely expensive system, it's now impossible to unmake the system without creating major financial losers. E.g., you want a health system in which doctors have salaries comparable to that of Belgium? Great! Who's going to tell them that they're getting a pay cut? Or as Megan McArdle put it:
https://www.bloomberg.com/view/articles/2014-04-30/single-payer-would-make-health-care-worseAnd of course, similar electoral logic applies to coverage. The electoral incentives run against any changes that would result in any fewer procedures being covered by insurance compared to what people are currently used to. And I think this is a bigger problem in the US political system, because power is more diffuse. Angry citizens can wield leverage against a few members of Congress who aren't obligated to tow the party line a way that they would be in a parliamentary system.