No, they end up broke because they spend as if they’ll never run out of money without putting it into places that continue to make money for them. They level up their house, car, clothes, flight class, whatever, then end up living paycheck to paycheck with no savings and not being able to keep it up forever.
Are there cases of some wealthy person trusting the wrong guy, whom they hand over their $$ to and that person runs off with it? Sure, but that’s a far cry from getting advice from a professional and following their advice.