This common sentiment isn't really true in general, but led to a great deal of amusement for me in a previous life in wealth management.

We constantly got clients who were newly rich and believed there were all sorts of tricks and loopholes that would allow them to avoid paying taxes. They'd come to us with ideas about trusts, shell companies, charitable organizations, loans, whatever, and inevitably leave frustrated and disappointed when they learned the really was no way to use their new wealth without the government first taking half.