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]
(..) So do infectious diseases. Right, uh, so I guess Men Now really is taking off. I guess you'll just have to keep all those profits to yourself. Please. Money means nothing to me. Right, which is probably why you're driving around in those junky cars. (..)2016 TvShow: Bones Title: The Murder of the Meninist Season: 11 Episode 12