I know one guy.
My friend’s brother went to an ivy league school and landed a great job right after graduation. This was the early 90s.
After three years of busting his tail (and a little bit of luck) he was promoted to a vice president position making 500K a year.
At the time, he was living in a friend’s house paying very few expenses. When he landed the VP gig he decided to keep his lifestyle exactly the same (and the friend was nice enough to let him stay).
So, for five years he either invested or saved the majority of his paycheck and ended up with about two million dollars to his name.
Then, around 2000, at the ripe old age of 38, he retired.
While he still re-invests his money, and remains frugal, he’s bought his own house and spends most of his time traveling the world.