It seems incredibly presumptuous to assume you know how the minds of children of billionaires work and what they aspire to have.
This calls to mind a scene in the series "Succession" that I can't find now. The father and owner of the company is considering selling the company and cashing out, and his children, who have all been fighting for years to become his key successor, are up in arms about it, despite the fact that they would all become cash billionaires due to the shares in the company they already own. The gist is that having billions in cash effectively makes you a nobody compared to the person actually running a multi billion dollar company. As the leaders of a global media company, you're somebody important, compared to just some schmuck with a billion dollars. Then again, these characters are all have deep insecurity living in the shadow of their father, and he plays them all like a fiddle to keep them fighting each other for his approval.