Les Wexner is a Creepy Pedo Monster; he is one of many high-value targets. There was no way they were going to let Jeffrey live. Look what happened to Robert Maxwell. Ghislaine should tell the FBI what she knows before she gets bumped off too.
The levels of secrecy are thick, and you don’t get there overnight; the abuser is groomed step by step. Every time you go to the next step, they have blackmail material on you.