It won't. AI doesn't fire anyone. AI doesn't replace anyone. AI shows the potential of doing the same job as a human, so another human fires that person and replaces them with an AI.

The CEO isn't going to fire himself. His "replacement" with AI is going to be him using it to make decisions, and feeling so smart about "using all the tools available", but he'll still be there to collect a paycheck.

That’s an interesting thought. Do you think they will downsize boards of directors and slowly whittle away the executives? Either they won’t stand for it to ensure that they and their friends all stay rich, or they can use it to exclude the people they disliked all along and it can be a slow voting out like reality TV. The general egoistic nature of most billionaires makes me lean toward the latter