the US is the size of the European Union, not the size of France. Scale matters. And heterogeneity matters.
Actually, the US is less than two-thirds the size of the European union.
But I don’t buy your argument. America has economies of scale that no other developed country has, and economy of scale should make it cheaper per person to effectively deliver government services.
And more — not providing a solution doesn’t invalidate anything about the article. If that’s your main beef, you’re basically conceding that the article is correct.