Exactly. I can open up to 30 clients overnight, 15 without lag during the day. But what's the purpose of doing this ? What benefit it brings to the server ? None. The players that mall help the server to be online so it's ok for them to have advantage over the others. The players that no life, help the server to be more active, also they are the only reason why mallers mall, if no lifers wouldn't exist, than mallers would have no reason to mall, server would die. Now what good does opening 20 clients ? Server will be way laggier, economy will get fked up, new players that won't be able to run as many clients won't have a chance to buy anything and will quit, etc etc. AFK farming leads only to bad things, I seriously can't find a reason why this should be left untouched. It might have worked well for the 2007 ToP, when most of the people couldn't open many PCs but now it's just ridiculous, also we can't compare the playerbase of ToP in the early days with the playerbase of this server.
You can't say that because we are talking about PKO if this was some other MMO game i will agreed with that, the only solution for what are you saying is that you can't open another client with the same ip or something like that