It's not just about dollars per person - the difference in size of the countries makes country-wide solutions much more challenging. The Netherlands are about 16,000 square miles. The US is 3.8 million square miles.
Taking something like medical treatment as an example, it's not just that you have to scale up the number of beds and doctors in each hospital - you need to build many, many more hospitals, staff them, ensure they have critical infrastructure, etc.
That's not to say that the US is doing even close to enough, but the fact that GDP per capita doesn't do anything to capture the differences in magnitudes of solutions required by the two countries.
Taking something like medical treatment as an example, it's not just that you have to scale up the number of beds and doctors in each hospital - you need to build many, many more hospitals, staff them, ensure they have critical infrastructure, etc.
That's not to say that the US is doing even close to enough, but the fact that GDP per capita doesn't do anything to capture the differences in magnitudes of solutions required by the two countries.