Another angle I see is that AI tools start by benefiting the individual and the user captures the increased productivity (you could argue appearance thereof) in the form of slack time. Some tedium almost eliminated here, a problem handed off and crushed over there, and we've got an extra hour or four back in our day.

Does that person rationally go find more work to take on with that reclaimed time? Probably not unless it's their company or exceptional motivating circumstances exist.