Yeah, every single bodybuilder who doesn't place in the top 5 of the Olympia.
Anything other than that and you are competing for fun and/or free.
Couldn't resist being a smart ass. I never have competed but I know plenty of "naturals" who do several times a year and they are definitely not profiting one bit from it. From what i have seen and heard from them, you have to be borderline obsessed/masochistic to do it. Staying on a strict diet almost all year and doing hours and hours of cardio for no prize money - you need to be more than a little crazy. I know some guys who get off on the pain and suffering. Sick fucks.