Deleteion of account

This is a win-win situation.

A-net bans botters, thus making the EULA abiding client player feel confident in their product. That leads to more purchases by the client to their future products and a financial gain for A-net.

A-net bans the botters, thus compelling the botter purchase another copy of the game to cheat. That leads to another financial gain for A-net. The other options are the botters quit and move on or abide by the EULA. Everyone wins here.

A-net probably likes botting and E-bay to show off their detection technology as well. They are trying to appease us, the EULA abiding client. We are where their future income lies, not with the botters.

Botting and cheating is a permanent and necessary evil. Noone expects a hack-free game, just a vigorous and swift response by the managing agent, known as A-net in this particular case.

Hehehe, kinda has a .Hack/Sign feel to it, but you are correct in stating it is a win-win situation; as well as, there being no such game free of cheaters and hackers.