[throwaway34241]

Most of the high ranking health care systems would probably be considered "universal healthcare", in that everyone has access to care. Many of them are not single payer though (in the sibling comment's WHO ranking link, France, a multi-payer system, was ranked #1 for "overall system performance").

But I agree generally with this approach. Nearly every developed country has dramatically lower costs for the level of health outcomes, but they do it in a variety of different ways. There are clearly possible affordability improvements (even if we only try to catch-up to where other countries are at). But certain approaches may be more feasible to implement or may have less downside if things don't go perfectly.