They used his work on two separate occasions. The 2nd time was after they knew they had used his work illegally in the past. At that point it's a pattern of beh

They used his work on two separate occasions. The 2nd time was after they knew they had used his work illegally in the past. At that point it's a pattern of behavior. They were given the opportunity to fix it themselves (taking down the pics is only part of fixing the issue, not repeating the theft is the other part) and chose not to. How many chances should they get? What motivation do they have to change the behavior if there are no repercussions?