The two (real, non-politicians are corrupt) downsides to contend with:
- countries do this by limiting what they will spend; in the US you have access to unlimited treatment. E.g. in the UK the NHS will spend £30k for each good year it buys you
- this one isn't fair, but the US is where health innovation happens. Companies sell into it to make money to survive. They then sell into the other countries to make much less margin, and if those countries were all they had as customers, they wouldn't exist. The US is why we have the advancements we have, and all us non-US countries have silly smug citizens who think our countries are better at negotiating deals. If the US didn't do what it did, we'd be a lot worse off.