It might be better to think about what a horse is to a human, mostly a horse is an energy slave. The history of humanity is a story about how many energy slaves are available to the average human.
In times past, the only people on earth who had their standard of living raised to a level that allowed them to cast there gaze upon the stars were the Kings and there courts, vassals, and noblemen. As time passed we have learned to make technologies that provide enough energy slaves to the common man that everyone lives a life that a king would have envied in times past.
So the question arises as to whether AI or the pursuit of AGI provides more or less energy slaves to the common man?