I don't know if they are using the same tactic here.... but I remember long ago in FFXI SE made a statement saying that they were going to use a particular ban style.

One where they basically watched the account to be banned for a long time, gathered info on where all the gil etc was going - then when it had accumulated a great accomplishment of Gil or such - then is when they banned them.

They said something like... causing more devastation to the account this way deters the behavior from happening again or something... again I don't have a clue if they kept using the strategy or if they use it here... but its something to think about.