Yup. Ivana and Marla got lucky. He moved on. By choice. So the question is, what might be appealing enough to him that he'd want to leave? Would need to offer lots of money. We've seen his taxes. And debts.
On the other hand, Jared Kushner might be the one we should be worrying about. Dictators tend to pass the power down. Kushner might be interested in that.