The only non-evil Billionaire I know are the South park creators although they aren't tech Billionaires. I consider everyone else for the most part to not-be-good people.

Because south park decided to personally say essentially bad words to paramount using their episodes, the company which gave them a billion dollars.

So they took a billion dollars and they were still consistent with how they've been for decades at this point. All of this is truly remarkable in the particular world we live in.