The only truth behind the conventional “wisdom” that a billionaire made penniless could become a millionaire again within a year is ENTIRELY DEPENDENT upon their social capital. If you’re a famous billionaire, you’ll have people willing to throw money at your nonsense investment opportunity based purely on your name and former status.
If you’re some guy nobody’s ever heard of with some daddy money and you somehow manage to lose it all, you’re fucked. This guy will never admit he was wrong, he was simply failed due to regulation or something.