Exactly. In 1999 was Bill Gates a "programmer" or a "manager" or (arguably) "investor"? I would say primarily a programmer who delegated, thus in a linguistic sense being a manager, but really still being in the first category for the purposes of this diagram.
Right, but at some point soon after he would most likely no longer have his job title be programmer thus removing him from that category on this list. Basically what I'm saying is the only people on this list who would fall under "programmer" and be in the 1% are those who are highly paid consultants, etc as even if one started their own company as a programmer (other than a services company where they just work as a consultant), at some point that title is going to most likely be changed to manager or investor and they would no longer fall under the programmer category even though programming is what got them to where they are.