As someone who personally makes high seven figures and who's met dozens of people of 9, 10-figure net worth -- I think it's ridiculous that anyone thinks becoming phenomenally wealthy is not overwhelmingly determined by luck. None of the rich people I've met have any notable characteristics that explain their "success" -- although certainly, some have convinced themselves it was due to some quality of theirs that they could control (and not just that, for example, they were lucky to get into the right team, at the right firm, at the right time, etc.).

I assume people who believe wealth and success of individuals can be explained by predictable qualities or behaviors of that person have simply never met a rich person in their life.