unless this is a big multinational spam organization probably the boss of the person sending the email is the highest up, but no matter what there will be someone on the top who does not get fired and will be able to reap all the rewards of the AI automation, at least until the AI revolution puts them up against the wall.
There's presumably heavier competition from other spammers, until everything is in equilibrium again. The wallets of potential spam victims only have so much total cash.
