Epstein was an independent operator and loyal to no one. He gathered dirt and put it out there for bid. He offered services to anyone who could afford it. Mossad is not above extorting even their own when needed to keep them in line. It is a Mafia, this is how a Mafia operates.
That is also possible.
He gathered dirt and put it out there for bid.
That would also create enemies wanting to see him dead and in some cases like the Clintons, also having the ability to kill him.
Except I'm not aware of Epstein having layers of personal security in New York.
He offered services to anyone who could afford it.
That is a very dangerous game to play. If Epstein had ventured into the spy-v-spy world, I don't see a foreign agency seeking to cover it's tracks waiting until Epstein had been incarcerated the second time to whack him. Would have been much easier to get at Epstein while he was still freely walking the streets.