The big problem I see with AI is that it undermines redistribution mechanisms in a novel and dangerous way; despite industrialization, human labor was always needed to actually do anything with capital, and even people born in poverty could do work to get their share of the growing economical pie.

AI kinda breaks this; there is a real risk that human labor is going to become almost worthless this century, and this might mean that the common man ends up worse off despite nominal economic growth.