Affluent amnesia
The condition where poor people who become wealthy forget how difficult life was when they were poor. They often speak condescendingly to poor up-and-comers and suggest they lack the talent or drive to succeed.
I remember when he was playing guitar in a coffee shop and now that he is a famous rocker, he acts like all the musicians he played with didn't have his dedication. He's got it twisted man, he's got affluent amnesia. rich, arrogant, condescending, narcissistic, self-absorbed, judgmental