Earlier quoted context omitted.
The point of nationalisation is to address those underlying concerns. But it’s fair to say that in practice, nationalisation doesn’t always solve those problems. The problem is you either need to regular or nationalise. And neither of those are particularly “American”.
I don't think our problem is a lack of regulation though. If anything its a lack of market competition, and that is caused by over regulation and legal protections that make holding companies responsible difficult or impossible.
Regardless of "insurance", who is ultimately paying, or subsidies to provide a baseline of care - there needs to be reform that mandates simple up-front prices, constant per-provider regardless who is paying, and ruling out any other theory of billing. Doctors throw up their hands and act like they're dealing with some special problems, but there are plenty of other industries we can look at for the dynamics of how to handle routine procedures versus emergencies (and knowns vs unknowns) in a consensual and market-responsive manner.