Making money work for you is the way that all of the wealthy people in the world make money. There is absolutely nothing that couldn't be done if those people didn't get rich via just money making money for them. We all say that richest people in the world are rich for doing something, but the reality is that the profit scheme is not the same for them as some small business.

If I have 10k revenue a month, and 4k costs, then I have 6k profit, if I reinvest 2k of that back, then I have 4k left and that's all I have. Whereas if Elon Musk sells a lot, or just gets new good news to world or whatever his stock prices went up, so he got richer, for absolutely not doing anything, and got richer, just because people bought his companies stocks.