Famous doesn't equal to rich. Rich people could become poor and that's another topic, but famous people being rich isn't a guarantee, just because you are known doesn't mean you should be making money. The guy who found penicillin gave it away for free, he is famous, but he wasn't rich.
Currently if you're not financially buoyant you can't be famous, we have a limit of how famous someone can be, so many entertainers are famous, elon musk are famous because the kind of things he deals with...so what you do will determine how length will be your famous...
Not everyone is like Elon Musk, not everyone is famous that kind of way. In fact, there are more famous people in Hollywood as actors than rich business people. Do you know every single person from richest 100 people in the world? Most know 5 or 10, if you are interested you know maybe 20-30, but not many know all 100, and yet you all know 100+ famous Hollywood actors, and yet they are not that rich. Fame doesn't get you rich directly.
Firm can give you the opportunity to becomes rich, they're so many opportunities that come from someone who are famous, it's can seek for something and it shall be granted...
Even though people who are famous doesn't have money they way you expected...at least they're living average life, because if you're on Hollywood, it's obvious that you cannot be a beggar..And you have something to sustain without knocking anyone for assistance for feeding...Actually I will agree on your point of views..not all everyone who is famous is rich....