I feel like the earnings structure is quite different than it was post-war though. Today there's a larger difference between "income rich" and "capital rich" in terms of their options for avoiding tax incidence.
Like in 1947 a factory owner's profits would show up as high income. Today they wouldn't (money is in share prices and complex financial arrangements / borrowing). The high marginal rates hit the chief engineer instead, who actually works for a living.
Like in 1947 a factory owner's profits would show up as high income. Today they wouldn't (money is in share prices and complex financial arrangements / borrowing). The high marginal rates hit the chief engineer instead, who actually works for a living.