Why are surties so damn rich?

I study in a pretty expensive school and almost everyone around me seems like they are from well to do or straight up rich families Not middle class rich but proper upper middle class or rich families.

I know i’m in a good school but still like how can 90% population just be straight up from wealthy families

When I look around the city in general it feels like everyone has an iPhone everyone is driving good cars wearing expensive clothes and living comfortably Sometimes even people who look average financially still end up having better phones bikes or lifestyle than you would expect

So I am wondering is Surat actually this rich or is it just my school or social circle creating this illusion Or is it more about people showing off and spending on lifestyle even if their actual income is not that high

I am genuinely curious because it feels like 80 to 90 percent of the people here live way better than the Indian average What is the real reason behind this