you see a lot of those in private schools abroad - especially in latam or mideast countries (from my experience at least). They are 15, they already know that they will have all the money in the world, sometimes even they are the 4th generation.
Altho when they manage to instill into the kids the drive to succeed, a few of them become mega mega rich thru their own ventures.
Ofc they got big family Seed money at the very beginning or made into the elite schools thanks to their background, but not all of those got funded can manage to multiply it x10 - often they just destroy it all and go back to their simple arrogant rich life. Unfortunately, that arrogance stays no matter what