SE will be putting in countermeasures against RMT's but they can't just go around banning everyone who looks like they're botting. I can't tell you how many times I was called a bot in FFXI cause every once in awhile I'd spend a few days doing nothing but crafting to boost up my gil. Even people in my LS called me a bot sometimes. I'm pretty sure they were teasing but it still gives you a idea of how hard sorting out bots from real people can be. The best bet they have to counter RMT's is to put something in the mail and trade systems that red flags people who trade/mail large amounts of money. If they hit the money keepers then its kinda hard for them to operate. Still you have the people who level and sell profiles and then the user that uses bot cause he doesn't have the free time. Stopping them is where things really get tricky. I don't think the server's can handle tracking everyone's movements and looking for patterns. Not to mention most bot programs slightly randomize the path they take. So the only thing they can really do without hurting real players is ask us the players to report them. No matter what SE does though they will be around cause they're like cockroaches. You can stomp all you want but the damn thing can still survive a nuke.