Because then they'd be more likely to say no.

Fuck models and prostitutes for a while. Pretty soon you can't get it up for regular models and prostitutes. Then you need world-class, best anywhere models and prostitutes, famous ones. Then that stops working. Then you need the kink to really lay on. Gets old pretty fast. Nothing is getting it up anymore. Then one day, you see your daughter down the hall, and it twitches. But you can't fuck her, she's gonna be around forever and in society where your secret won't be safe. She could tell her therapist, her teachers, her mother, the world-class model prostitute you're married to. Thankfully Uncle Epstein has a bunch of girls who are disposable. It's just that he has an odd tendency to take photos of you. But that's OK, everyone you see here is rich and powerful too, if one of you goes down, you all go down... and that can't possibly happen.

The crime and taboo nature is probably part of the thrill

I bet some of the worst of them are psychopaths who don't directly enjoy it as much as they enjoy proving that they can do it and get away with it. Because they're special. They're better than everybody else. Clearly. /s

Because you can't force them to do what you want without them telling the authorities and ruining your reign of debauchery.