[impossiblefork]

If you have competition, you will not have more than your marginal contribution.

If you are free to be human because the tools are working, your marginal contribution will be small, since one guy who accepts not being human could supervise the tools.

[scottfalconer]

I believe there's still plenty of margin to capture beyond merely overseeing AI. Could we reach a point where humans add no marginal utility? Maybe. I hope not, but we can't discount the possibility.