The tone of voice suggests you dislike Musk, but I will still answer in good faith. From what I can see from the outside, he has consistently for many years stated the same goals and worked on them. Any or most financial gains he made, he invested into his companies which work on accomplishing those goals (for example, going to Mars). The most notable example was investing his PayPal money into Tesla and SpaceX when they both were at risk of going out. He also has a reputation for working a lot, though it may be exaggerated, but he looks fairly unhealthy so maybe not too far off. Compared to other super rich people, he seems to spend less time in lavish ways, for example on yachts or similar. He probably still spends more money than we can imagine on unnecessary things, but on the spectrum of rich people he doesn't seem to be the most frivolous. Finally, he has said on Twitter that he doesn't care about money but needs resources for his goals, for example going to Mars. And after everything I’ve seen and the examples listed, it doesn’t seem totally implausible that he means it.
coldpie|4 months ago
Treegarden|4 months ago
nitwit005|4 months ago
Most CEOs presumably do want their companies to succeed and do good things in the abstract, but a lot of them would happily have them fail if it made them a huge pile of cash.