Comment by AJ007
The problem is the reverse of what is being argued here. The stakes are high because of how much money these companies are making off of DLCs/in-app purchases. The game operator thus has an incentive to ensure that high value customers can't be banned by third parties. Instead of just being banned, the player is suspended 24 hours or something, and then they come back.
Came here to find this comment. It is NOT about matchmaking and/or "protecting the incomes" of competitive players AT ALL! It is solely about protecting these games' in-game shops and associated economies. The real comp scenes are all done on LAN anyway, with entirely different anti-cheat setups.