MaizieD, I am sure you are being deliberately charmingly naive. Ethics and morality are not wooly. This lady's arguments for her cause are.
In light of what you say about limiting the ability of people to acquire large fortunes, let me set you the question about Bill Gates again, or perhaps, since you are obsessed by his later domination of operating systems, let us say James Dyson instead, there are lots of different vacuum makes for sale.
^For example: what should Bill Gates Jim Dyson have done when having worked hard (and he did ) to set up microsoft Dyson Ltd, develop the software his ground breaking cleaning technology and sell it to computer manufacturers customers when the value of his company exceeded E10 million?
If he owned the company is that classed as personal wealth? It is not money he can just go out an spend. It is invested in people, premises, and equipment.
Like the researcher you extol, you tend to answer the questions you want to answer rather than the questions that are actually asked.
How would he know when the company was worth that much?