I fear “we are not the richest country in the world” is an unreasonable standard for claiming chronic mismanagement.

Again with the "we". Per capita statistics are great distraction from neofeudalism.

What was the per capita GDP of Wessex?

I’m sorry but this is the best way to objectively measure anything. Otherwise you are just holding up your vibes to refute my numbers which is completely unscientific.

Numbers exist mate.

The fact you don't know about them isn't my problem.

Dividing the kings wealth by the number of serfs in his kingdom doesn't make the serfs any richer.