Honestly that sounds like not the whole picture. I think your perception might be because your clientele comes from the top whatever% of US society, where people make a ton of money.
Accoring to stats, the top 15% of households in the US has an income in excess of $200k - saving half of it and living like a king on the rest should be easy enough, while the median around $75k - even living frugally won't allow you to save a significant chunk of income.