Ah, typical constipation of free wheeling capitalists. First get there then you have a right to talk about it. No, I talk about it anyway, you don't need to respond to my post if you can't come up with any sensible thoughts.
90% would disincentivize people to work given they earn pretax sub 5mil or so. 50% would not. Nobody stops working because they pay 50% taxes (in quite a number industrialized, highly developed, democratic countries 50% is a daily reality for many). Where is the hurdle rate? I guess it's gonna be in the upper 50s. But I don't know. I am talking about ordinary income between 500k to 5 mil per year or so. 70-80% above 50 or 100 mil. 90% above 100mil. The idea is to prevent someone from earning zero income the entire life (only equity) and profiting from what everyone else pays into the "social pot" and then cashing out in one large chunk and fucking off. I can name another dozen reasons why it is harmful to society at large to let individuals earn 100mil without paying almost a penny in taxes but let's start with this one.