At least you’re thinking about it seriously- There are over 30 viable, working universal healthcare options fully operational in the industrialized world, & we Americans are great at taking the ideas of others & refining their ideas. Take the best working solutions of every aspect & create the best
The challenge is they all moved to UHC at least 30 years ago. Many more than 75 years ago. Their economies were much smaller and the financial and population bases were much smaller than we are now. The issue is getting there. Not the destination.
How is this an issue? Germany implemented UHC circa 1941 when the population was ~70M. Their population has grown since then (now ~84M) - but what's the issue? It was "cheaper" to implement then - ok - but the cost to keep it has grown since then too.
NB: China moved to UHC in about 10 yrs. 2003: Only ~20% of the pop covered 2013: ~95% of the pop covered .. and the population hadn't grown much over those 10yrs: 2003: ~1.3B 2013: ~1.35B Granted it wasn't very comprehensive coverage at the start - but it's improved a lot over the last 10yrs.