Denmark has just under 6 million people, the Netherlands has ~17 million, and NZ has about 5 million. By comparison, California has ~40 million people and woul

Denmark has just under 6 million people, the Netherlands has ~17 million, and NZ has about 5 million. By comparison, California has ~40 million people and would be the 9th largest economy in the world if it was an independent country. Ohio has around 11 million people, and the Greater New York City area has ~20 million people. Aside from structural / legal differences in the US, there are just massive differences in scaling and wealth in the US vs. those countries. They don't have these problems because they just don't have that kind of money and population base.