Becoming a billionaire is never done through your hard work.

It is only by exploiting the surplus of large amounts of workers at scale that permits being a billionaire. It is their hard work, not the billionaires.

Now, how much surplus the workers get is primarily the discussion between capitalism, socialism, and communism.

Naturally, capitalists are disinclined in giving ANY of the surplus, and keeping it all for themselves. But when every capitalist does that, thats how we end up with 7 year depression/boom cycles, when the whole economy treats workers poorly.

>It is only by exploiting the surplus of large amounts of workers

Well, it's possible for a person to become a billonaire without directly doing this. I think it was said somewhere that Lebron James was one of the first wage billionaires, due to his 20+ years on top of the NBA.

But loosening the statement a little, if the person themselves hasn't its almost certain that the people that have paid them have (in the case of sports athletes, the companies paying for the ads).

Be that as it may, being a wage-slave billionaire still leaves you less exposed to direct first-hand moral dillemas than the CEOs of companies.