I don't know why they'd stop at most programmers instead of all programmers. And the marketing department will also be AI. Companies want AI to remove the need for any labor so they can more directly gain money based on already having money.

They'll need at least a few programmers because AI doesn't actually work very well and fixes will be required. The marketing department may end up replaced by AI but so far marketers have convinced companies that they're so essential that even the most popular and well known brands in the world feel the need to spend billions on more and more marketing. If anyone can talk their way into staying employed it'll be marketers.

> directly gain money based on already having money.

I'm stealing this.