The ATP should fine each player who tanked a match and take back all their prize money of the week so players will learn not to tank matches just to collect the prize money. If you want to practice for the TMC in Shanghai than stay the fuck out of Paris and give other players a chance to play.
With fines like $5000 they won't achieve anything. In other sports fines are much higher.
If your ranking is good enough to qualify for a tournament and you decide to play they can do what they like.
If a player wants to tank thats there problem not your's and they are giving players a chance....a chance to go a round futher they they were expecting!