When people see "luck" they often miss "set up to capitalize on getting lucky." That is the component of skill (and background) in most entrepreneurial success stores. Mark Zuckerberg, Elon Musk, Bill Gates, and most other mega-entrepreneurs were very good at exploiting their lucky circumstances. People who don't notice this think it's all luck because they wouldn't be where they were without the luck - they notice that the luck was necessary. They don't notice that the luck wasn't sufficient. Lottery winners are a great example of the insufficiency of luck to create wealth.