A big reason why a robot might not outperform a human is that it's just cheaper to hire humans. And that strikes me as an excellent incentive to make sure humans are paid more and within a legal framework; it increases the rate of technological development.

And while the resulting unemployment is a very serious issue, I'm inclined to think that the benefits outweigh the cost.

(That said, I very aware of the fact that this is easy for me to say)