I found this on the Final Fantasy wiki. If it has been posted on the wiki you know Square Enix doesn't care enough to do anything to resolve the issue.

Square Enix's Reaction: Square Enix bans RMT in both Final Fantasy XI and Final Fantasy XIV. Nevertheless, RMT has had a significant ongoing presence in, and impact on, both games. This presence is likely due in part to the fact that Square Enix only bans the sellers, but never punishes the buyers in any way. They even get to keep their illicit purchases.

The Players' Reaction: Most of the players are indifferent to or outright hostile to RMT, but do not believe Square Enix is willing to do much about it. There is also a certain belief, not uncommon, among players that poorly thought out anti-RMT actions do more damage to players than RMT itself.


Of all the bullet points on the Final Fantasy wiki I found the last two to be most interesting.

* RMT advertise their services in-game relentlessly, producing an irritating barrage of noise that can't be blocked out.
* By exploiting easy ways to make money, RMT ensure that Square Enix will patch them out of existence, angering legitimate players by destroying their income.

http://finalfantasy.wikia.com/wiki/RMT