Autobot FTW!
Optimus Prime {You can have this!}

well, you can say there is no bot in FFXI, WoW, Ragnarok Online, Rift, etc.....
Also, you can say there is no gilseller/RMT in those games also. ( well, first day of playing those game, you'll get some /tell to selling money, at least not much RMT in FFXIV that try to tell/shout everyday as other game. )

Bot is a challenge that game maker must face, and they have to find some way that limitation on bot or make system un-botable. ( gathering fatigue is one of the bot prevention method )

This is my guess why SE just do nothing with bot

Yoshi-P : Dear President Wada, we have a list of bot report user as in attach file. I need your direction what do deal with them.
Wada : ( not even open attach file ) Yoshida-san, how many users in this file that look like bot?
Yoshi-P : Around 50% of all population, sir
Wada : 50% omg! Well... we can't risk to lose any more playerbase, let them bot while they can until we start to charge the money from them for 6 months first.
Yoshi-P : Sir.... but game economy might rui....
Wada : STFU! IF MY FREE-FOR-1-YEAR DECISION IS LEAD TO FEWER PLAYERBASE, I WILL BE FIRED BY SQUARE-ENIX BOARD! So stop complaining and just ignore those rants in forum and continue fixing this damn game! No more talking about bot again!
Yoshi-P : Sir... yes!sir!