Every technological singularity leaves us with no visibility of how the economy would look on the other side.

A postman being disrupted in the nineties by e-mail would hardly be able to understand the concept of a social media manager. For a lot of functions the internet represented a singularity in it self.

Much as a 6 yo British coal miner couldn't envisage a nuclear power plant operator, we don't have the visibility to see what lies on the other side of the robotics/AI singularity. It might very well be shit, it might be heaven, we simply just can't tell (that's why such an event got the name singularity in the first place).