For what it's worth, if you tap into the investment side of the business of being rich you are tapping into the incomes of the employees of those investments.
This is one of the reasons tax systems of all kinds go for the incomes of the middle class and the poor. The idea is the broad masses are used to being poor, so leave them that way.
Modification of the inheritance laws to favor family members over the exchequer or the non profit ffoundation professional class would go a long way toward keeping that wealth invested which will keep people employed and make a lot of relatives of the really rich very happy.
I've proposed many times that we simply require that wealth above a certain level be distributed to the 500 closest blood relatives upon the death of the owner. That way you keep it in the family (to maintain the integrity of corporate interests or large agricultural groups) while busting up the really big piles into manageable chunks.
I think some folks worry this would result in an increased murder rate among the really rich ~ not really something we need to worry about eh.
I simply cringe every time I see a proposal concerning how someone else’s wealth is to be divied up. I see no positives to that way of thinking. Sorry, I just don’t.