This person admitted guilt and entered a non-prosecution agreement in which he agreed to help the government build a case against his former business associate.

This person admitted guilt and entered a non-prosecution agreement in which he agreed to help the government build a case against his former business associate. There was a WSJ article about him last year which went into detail that he agreed to obfuscate income for this former business associate in return for the funding he initially got to get Vista off the ground. Additionally, that WSJ article detailed that Robert Smith became aware of an investigation into him through back channels and that's the point when he started making a splash with public giving. I'll see if I dig up that article in case anyone's interested. "The other side" as you put it is him literally admitting guilt. He could have used his massive fortune to fight it, but he'd probably lose control of the firm + other consequences resulting from that. Edit: It was a Washington Post article, not WSJ (https://www.washingtonpost.com/business/2020/11/09/smith-brockman-tax-evasion/ https://www.washingtonpost.com/business/2020/11/09/smith-bro...)