They should pay top government officials multi-million dollar salaries like they do in Singapore. Then they could attract top talent to those jobs and they wouldn't have to engage in all these questionable side hustles.
You would have to find someone who has so much money that anything extra wouldn't matter. Those people do not exist and the richer high paying job it is the more it will attract the wrong type. Put Musk in one of those jobs and he will use influence to increase his wealth.