I guess if we take any fighter and search for his story, then his life story would be worthy of a Netflix adaptation. People rarely go train any combat sport because of happy life. People rarely become a professional fighter only because they are good at beating other guys. Imho there is never a guy, whos parents were billionaires, and due to boredom, he began training martial art, all of a sudden he realises that he has a talent and becomes a champion. This is plot of a movie from 80s-90s only.
I don't think that would ever happen to some people who were raised and have everything they need at home and they can just simply ask their parents for everything that is a trend today. You can see how Manny Pacquiao's son fights and it looks like nothing from his father's talent even though he taught him well what to do. A person needs determination and high aspiration to achieve his honorable goals and that only happens if a person is raised in a harsh yet positive environment which leads him to dream and wants to be a champion one day. That's why in the tradition of the Arabs back then, they let their babies be raised by the Bedouin Arabs to make them strong at a younger age.