There is a notion in economics of complements and replacements. The plow was a complement to horse labour, while the gas engine was a replacement. The former increased demand for horses while the latter basicly eliminated it. If we truly had human-level AI, labour models predict human wages would decline below subsistence. However, applying these labour models in a regime where we have AGI makes little sense, as all that will matter for human welfare is the objective functions of the AIs.