They’re not profiting from the thing they got for free - college tuition/room/and board. Their profiting from their individual talents.
They kind of are, though. They are profiting off of their athletic prowess, which is only on display due to the scholarships. It's not a hill I want to die on...and I've already admitted that it isn't double dipping. Besides, I don't have a dog in the fight anyways....I couldn't care less for college football, or professional for that matter.