Nobody earned enough to be taxed in the top bracket. That was the entire point. To avoid that top bracket, businessmen lowered prices, or paid employees higher wages, or purchased tax deductible goods and services. What they didn't do was take additional profit, because the IRS would claim 91% of those profits. Everything the businessman did to avoid that punitive top tier was of great benefit to the economy.

That's basically every tax system excluding the ones without taxes or that apply a flat rate to everyone.

I don't know what were the brakets. But a lot of the time, for billionaires, the vast majority of their income gets taxed at the highest bracket. Because the other brackets are too small to even register in their income.

Your post is useless if you don't mention what the highest tax bracket is.

I had to explain this to my retired parent, who worked their entire life handling payroll. It’s genuinely appalling that the system is so effective at keeping the public uninformed.