So what is Musk going to do with his rockets? Send rich people into orbit for a hefty price tag so he can make even more money? Wow, now I'm sold on rich people doing big things. How about maybe he spend his money to cure cancer, and give the treatments away once they are available? Oh, that wouldn't make any money. OK, so he can sell his cancer cure to very rich people who can afford it. Great. Now I'm really sold on rich people doing big things.
Look, rich people are rich because of a broken, oligarchy system that is rigged in their favor, and they don't give a shit about regular people. Their behavior proves that to be true. A true philanthropist would spend their money for the betterment of everyone, not just to make more money.