In the USA top 5% income is about $300k USD[1]. With the relatively low tax rates, I would expect you can take home at least $200k (depends on the state). Like the original poster said, it's not that hard to live off of $50k in most of the US (even in the bay or NY, but you live like a college student). That leaves savings of 150k USD/yr from one source of income. Many families have two working professional adults and can almost double these numbers. Add in investment returns and $2.5 mil becomes a very achievable goal. I know a lot of people in their 30s like the poster and am closing in myself, it is not that uncommon in the US tech community.

[1]https://www.investopedia.com/personal-finance/how-much-incom...