Would a nationalized healthcare system be superior at this point?

Okay, massive caveats -- by what standard, you ask?

It does seem like it would be cheaper overall -- insurance being less of a burden on other entities, less predatory pricing, etc

However, can we assume quality of care would at least be comparable, or is there potential that it would be worse?

If America's "advantage" is more specialized healthcare (obviously benefitting higher earners, granted), do we have potential to lose that cutting edge in academic circles and research?

Having worked on some healthcare policy, it just sticks out to me that we spend so much for so little. However I do not have a broader perspective on all of the contributing factors to that, and don't know the cons to a truly centralized and universalized healthcare system beyond the ideological talking points.