No, you can't etc your way out of this one.Size has everything to do with it.
Tax base, beaucracy, nuances, specificity of the law, etc.
Not to mention issues with geographic implementation and population density.
If we assume college attainment is the same within the Western world, then on a per capita basis the costs should be the same. So financial hurdles will be the same for countries of all sizes.
And pretty much everything else you pointed to is culture specific, not tied to the size of a population.
Not to mention, the skyrocketing costs of college and healthcare have become a defacto tax on the US, and have begun to have a major systematic drag on the economy.
So please walk me through the specific mechanisms that make social programs more viable for smaller countries than large ones.


And even if that made any sense (and it doesn't), Western Europe has similar population density and area as the US and has much faster average internet speed. You are panicking 


