I admit I did not read the book but I must say the concept seems wrong from the root. A person with a lot of wealth must invest his wealth in some way that it

I admit I did not read the book but I must say the concept seems wrong from the root. A person with a lot of wealth must invest his wealth in some way that it will generate jobs or invest the money in other business. That is also a benefit for the rest. So that thing about "we cannot see" I do not think it is such. I mean, it is easier to see poverty on poorer people BUT the wealth invested is also what makes people have incomes. And you need people investing and managing wealth because someone needs to pay bills and multi-year investments or risk capital. It does not need to be a single person, but a group of wealthier people are usually more inclined to risk wealth than average. I think this role is also necessary in societies.