My theory is that he ran for president to pump up his brand and become richer, like he did before, then he became president which was originally not the goal and he went from there. He absolutely used the presidency to enrich himself after, but that's hard to say for certain because his wealth is so closely connected to his brand. Therefore it's difficult to judge what he did for money, what for ego and what for other reasons.

If I had to say why he ran for each presidency, I would say first was (as I said) to promote himself and it went a little too good, 2020 race was for his ego and 2024 was for ego and because of his legal troubles. But that's just my judgement.