Biology/biochemistry can squeeze a good amount of computation from just 20 watts.
Even if we could get equal computation from silicon and have an algorithm to run near human-level general AI, humans can maintain the comparative advantage as long as the cost of hardware is more than the cost of raising and educating a human, and the operating cost is more than wages for the same task.
Even if we could get equal computation from silicon and have an algorithm to run near human-level general AI, humans can maintain the comparative advantage as long as the cost of hardware is more than the cost of raising and educating a human, and the operating cost is more than wages for the same task.