He isn’t on a powerful target list.
To stay alive Epstein needs a smoking gun. Feds seem to have a lot of his information.
If the core rumors about him are true, then there is a reason he hasn’t been killed yet and that reason might be scarier than the pedophile himself. To put it bluntly, if he was running a blackmail operation against the wealthy and powerful, only cutting some of the powerful in on the blackmail operation would save his life - they’d find him more useful alive.