The job of CEO seems the far easier to replace with AI. A fairly basic algorithm with weighted goals and parameters (chosen by the board) + LLM + character avatar would probably perform better than most CEOs. Leave out the LLM if you want it to spout nonsense like this Amazon Cloud CEO.
Worst case scenario the ai fucking loses it and decides to do some wacky but weirdly effective shit. Like spamming out 1 width units en masse in Hearts of Iron 4.