It happened to me at much lower $. I grew up poor, all my friends are solidly blue collar middle class. I live in one of the nicer areas in my city, one tier down from the where the people live whose name you would know.
When you're poor, getting some extra $ means maybe you boost your 401k or something. But once you are doing the max, or maybe you make so much you can't legally put money in 401k, it's very confusing. My lifestyle didn't even change but I asked one of my friends for advice, if they had any family or something who had some money and I immediately lost that friend.