Perhaps look at how other countries arrived at a national health service. Demand/support reform on private health insurance. Demand/support change in the accessibility of services. Demand/support heavier taxes on the most wealthy. Demand/support centralization of healthcare versus private profiteering and milking private insurance pots.

Are certain politicians or parties as a whole invested in the healthcare system itself, directly profiting from it, and thus might be opposed to the idea?

A healthier country is a more prosperous one.

Or maybe they could find whatever solutions help them get through their day without being judged by someone with the random privilege of being born into a more functional system.

>A healthier country is a more prosperous one.

Between the US and the UK, which is healthier? And which is more prosperous?