If AI could do it all, why would there be any firm if AI could operate itself, too, then?

One argument may be that ownership is the last role for a human in a business. The firm exists to show ownership of an AI and provides a mechanism for managing its proceeds.

Only the highest and lowest level jobs are available. Someone needs to report to shareholders and plan. If a PM can just write tickets and they get done, then you just need one PM.

Maybe this isn't practical today, but in 2, 5, 10 years? I still have to work 30-40 years before I retire, what do I do?