I should mention that only South Korea and Canada have TRUE Single Payer (which is, IMO, what the US should be working toward).
Any other type of “universal healthcare” has the effect of creating a premium lane alongside the regular one. However, if all of society has to use the same healthcare system, they will have no choice but to collectively fight tooth and nail to improve healthcare for everyone. This is the only way, IMO.
In a truly just society, the homeless man sleeping on the bench would have the same healthcare as Jeffrey motherfucking Bezos.