There's a concept in psychology called auto eroticism, where the paraphernalia which someone is sexually stimulated by is titillating because they envision themselves in the scenario/fantasy in their head or on screen that is depicting their fetish. Many people on this forum especially are aware of autogynephilia, but the actual scope and exclusivity of what fetishes someone will attempt to live out in their real life isn't exclusive to trying to become a woman. Like a drug you may require "stronger" doses to get the same high and you risk falling to depraved depths in order to satisfy your fetish. Havelock Ellis marked the extreme end of this mentality as, "unshamed efforts at sexual self-manipulation witnessed among the insane". The person at this end-stage is allowing their fetish to affect reality and action, all in pursuit of achieving a new yet familiar high, and have often convinced themselves that their delusional sexual fantasies hold some basis in reality. Epstein wasn't just someone who had a fetish for young girls, he escalated it to the extent he repeatedly got caught in the act by others trying to solicit or even molest young girls. Just as trannies are often an escalation of their respective fetish, Epstein's had escalated his. It wasn't just the girls themselves, it was the illegality and taboo nature of it all that might've been a significant component to his fantasies/daydreams. And on top of that, he pictured himself as a major participant in it all. It's not just that he found X (young girls) titillating, he specifically found X (young girls) + Y (himself) titillating, and the scenarios envisioned - in likely escalating levels of degeneracy - all involved himself and transitioned from fantasy into reality.
It's not universal and even then, how potent an influence the fetish is to spur on action doesn't necessarily result in actual action/harm manifesting, but this phenomena is somewhat common and isn't exclusive to trannies – there's a bunch of threads covering depraved kinks and fetishes on this site alone where people will do stuff to their own bodies in pursuit of sexual self-gratification.
When a fetish becomes an actual important part of you, because you have tied it to your personal identity - or so view it - it's only going to continuously escalate until your then-harmless femdom fantasies result in you becoming emasculated to the greatest possible extreme IRL (Wachowskis), or your covert homosexual fantasies of white men lead you to concoct a false history of African slaves being raped by their white masters to assert dominance (Tariq Nasheed), or fantasies about being the woman in your favourite dominatrix porn eventually conclude in you cutting your cock off (Keffals). Like Havelock said, these people manipulate themselves into perceiving something as normal, or acceptable, ultimately harmless, or that they're otherwise justified in doing what they're doing.
When trannies kill themselves, their suicide notes don't often lament the fact they were trans. At that point the fetish is so apart of them that they cannot even bring themselves mentally to consider that it was wrong or it in any way contributed to their demise. If Epstein did, in fact, kill himself - it's similarly unlikely he felt any actual regret over the sex trafficking and rape. It's how deeply entwined these people become with their chosen paraphernalia.
The pursuit of satisfaction in their depravity often leads to people thinking with their genitals instead of their head, which makes them extremely easy to ensnare. You see people online who'll Chris Hansen would-be pedos to make content and cash by kicking their ass. Pedos and those who have otherwise allowed their fetish/fantasy to ingrain into their real life are easy to spot because they become so obsessed with living out that internal fantasy, they'll take any bait regardless of whether it's an obvious honeypot or not.
With the rich and powerful there's probably a similar phenomena where blackmail and extortion in return for keeping hush-hush isn't too uncommon, and for varying degrees wrongdoing or embarrassment. That doesn't discount the possibility that the people ensnaring are also sick fucks themselves either. If something like this exists, then there's probably lots of overlap between these blackmailers and their "victims" that stymie the actual exposure of these creeps. It's like a form of "pedo M.A.D." If X tattles on Y, then Z will feel compromised and expose X, and then Z doing that cause A to worry and so expose Z and so on. It might not all be for noncery.