NYC resident- many do, but I quickly taught my dc in a private high school (and the one in public bc lots of those kids have $ too) to find something else to feel good about himself other than $, clothes, apartment size, vacation homes, trips, etc bc as a kid from a middle class family in the obscene wealth of NYC, he was never going to win that game. It’s worked out well so far. He’s a very confident kid and worked to find ways to feel special that aren't materially focused.