True, however…
Banning them means they have to level another bot using whatever script, may take 1-3 days. And that bot won’t be able to do its job of being able to RMT yet if it’s a new account.
They can keep it coming, to do the point where creating a new bot is obvious and is on lower level maps, then they can be banned from there until they can no longer profit, leading to a waste of time.
This is a tedious method to deal with bots, but proven to be effective.
I remember bots in RO2 were DNA farming and getting manually banned repeatedly until they stopped. It works, but requires a lot of effort.
The Necro bots start to function at around rank 5 with Sorc taken, and is very effective starting rank 8 with necro 3.
Botting with a necro doesn’t really require a good software, I could actually set it up myself right now using a simple razer software or rog software bundled up with my peripherals.