He 'profited by' his experience/mistake. [=he learned something useful from his experience/mistake]
The book can be read with 'profit' by anyone who wants to understand how the system works.
We sold the house 'at a profit'. [=we made a profit when we sold our house]
(..) That's Jimmy Bags. - He was rea... I don't know. - What the fuck you doing? I'm in the hole, I pay him two grand. There's no profit, I pay him two grand. Then make more money. This is America. You don't make money, you're a douche bag. Now what you gonna do? - Make more money. (..)2006 The Departed