There is no server without bots , but even so it is not such a big deal botting in a PVP SERVER , i mean you can easily make items that's the point of pvp server..
Sorry that you gonna hear this from me but... ALL SERVERS ARE OPENING FOR MONEY ! Just some admins like the admin of extreme take it as business ,which means he puts a lot of time and effort in his "business" to be a successful one and that's something you don't see from every admin .
Lineage 2 WAS NEVER A SOLO-based game . @WarningX Gl with your project , totally recommend it .