> But if I go to Australia, Canada, UK, or any other country, how do I get access to this cheap healthcare without becoming a citizen or paying taxes?
You'd likely pay more than a resident/citizen who may not pay or may a token amount. But this full price will still be very small in comparison to US (eg full price of doctor's consultation in France is like 25 EUR).
Even Switzerland which is expensive for Europe in terms of healthcare is cheap comparatively (a simple ER visit might be a few hundreds, not thousands).
You'd likely pay more than a resident/citizen who may not pay or may a token amount. But this full price will still be very small in comparison to US (eg full price of doctor's consultation in France is like 25 EUR).
Even Switzerland which is expensive for Europe in terms of healthcare is cheap comparatively (a simple ER visit might be a few hundreds, not thousands).