The question is, are more of them rich from salary, from capital ownership, or from inherited wealth?

In the US, the broad “rich”—about the top 1% by income—overwhelmingly make their income from salaries and wages (https://www.cnbc.com/2015/04/09/where-the-rich-make-their-in...). However, the ultrarich—say, the top 0.1%—tend to make it from capital and inheritance.

Assuming financial gurus are trying to give feasible advice for how to become comfortably rich, the safest bet with the highest expected value is probably something like “get an elite professional education and find a spot in the elite managerial/professional class.” I.e., banker, MBA, corporate lawyer, or (for all the HN readers) FAANG engineer.