I would add that economic inequality, whichever its source is, affects other systems and that must be taken into account.

Gilens and Page (https://scholar.princeton.edu/sites/default/files/mgilens/files/gilens_and_page_2014_-testing_theories_of_american_politics.doc.pdf) are quite convincing in their assertion that “economic elites and organized groups representing business interests have substantial independent impacts on U.S. government policy, while average citizens and mass-based interest groups have little or no independent influence”.

This creates a lock-in that is dangerous and quite the contrary of the assumptions behind the good properties of capitalism itself.