There's also the fact that some states Medicares are banned for negotiating for prices, and a nationalised system can negotiate far more effectively than a privatised one.

Without the profit motive we can also focus more on preventative care.

https://www.bbc.co.uk/news/uk-42950587

In the summer, US think tank the Commonwealth Fund ranked the NHS the number one health system in a comparison of 11 countries for safety, affordability and efficiency. It did less well when it came to cancer survival

The US was ranked last out of the 11 countries.

The American health system came off badly in comparison when it came to infant mortality, life expectancy, and preventable deaths, but did relatively better on cancer, heart attack and stroke survival.

Meanwhile, the UK's cancer survival rates have historically been below the European average, although they are improving for certain cancers.

The UK has fewer doctors, nurses and hospital beds than the OECD average.

Even though you spend almost twice as much you come off mostly worse. And this is Vs the UK in which the NHS has been gutted by the Conservative government.