Note that the AND operator in my statement isn't an OR operator

Semantics aside, you haven’t established that those are primary drivers of cost or effectiveness. France and UK have 10x the population of Norway and are considerably more diverse. Can you prove where this impacts their respective costs?

I'm not making any specific claims about either of those aspects, simply that you can't compare two populations that are incredibly different in this manner.

You haven’t shown any supporting evidence of why you can’t compare them. Universal healthcare has shown to scale from Norway, Sweden, Denmark size to Spain, Italy, Canada, Australia size to UK, France, Germany size. What is the evidence it can’t scale to US size?