Taking via

- government lobbying for tax codes and loopholes, made specifically to benefit them

- abuse of various systems like H1B's and even SNAP (e.g. Wal-Mart) to subsidize their lack of payment to american taxpayers

- extracting value from public research (funded by taxpayers) and creating private products for sale. Sometimes they may even try to patent such breakthroughs for themelves despite public invention

- engaging in dark patterns and anti-competitive, anti-union behavior to extract wealth in ways that would potentially be proven illegal... had they not paid off the judges

- Performing untold of, actually illegal grifts (cases like SBF are only the tip of the iceberg)

And at this rate we may have to throw in "abusing funds to protect against the most heinous criminals imaginable".

Need I go on? There's pratically no such thing as a billionaire who earned their net worth.