[practicalpants]

A missing piece of this discussion is how American wealth got there in the first place: 19th century industrialization.

In that era you're either a farmer or an entrepreneur. America had a literal explosion of engineering, innovation, and entrepreneurship such that by Lincoln's death America was already the top global economy GDP (including per capita) and spearheading the industrial revolution.

This was much due to generally high edu levels especially technical education, specific regions of innovation (e.g. CT river valley creating interchangeable parts), and a lot of openness and mobility in the culture (and probably the general cultural obsession with commerce).

America doesn't exist like this anymore however it's a blueprint how inequality could be lowered... bring back a radical culture of entrepreneurship and innovation (not "go have a career at someone's company"), bring back widespread technical education, and bring back a whole lot more of our former industrial-manufacturing economy (which was like 80% of our economy in 1950 to like 10% today; "knowledge economy" is not going to get us there).