The compute and delay isn't worth it at all. Especially when you can disable rendering and keep compute pretty minimal. We're talking about reading a list of entities, moving towards them and casting a few spells vs a whole AI. Exponentially less compute, for better performance. Let alone the extra data the bot sees from the entity list vs the ai operating on visuals. Bots also make money by operating on a scale. And costs from ai would outweigh the already slim profit margins for each bot.