Between 1930 and 1980, the rate applied on the highest incomes was on average 81% in the United States, and the rate applied to the highest inherited estates was 74%. Clearly this did not destroy American capitalism, far from it. It made it more egalitarian and more productive, at a time when the United States had not forgotten that it was their level of educational advancement and their investment in training and skills that was the backbone of their prosperity, and not the religion of property and inequality.
Reagan, then Bush and Trump subsequently endeavoured to destroy this heritage. They turned their backs on the egalitarian origins of the country, by counting on historical amnesia and by fuelling identity-based divisions. With the hindsight we have today, it is obvious that the outcome of this policy is disastrous. Between 1980 and 2020, the rise in per capita national income was halved in comparison with the period 1930-1980. What little growth there was, was swept up by the richest, the consequence being a complete stagnation in income for the poorest 50%.