Large AI siloes, if allowed to exist, will bifurcate humanity. People who have a stake in those AI companies will no longer need the rest of the population to provide goods and services. We will split into two economies, where the lower economy is forever indebted to the upper economy for the bones they occasionally throw for free.
This is why we must break the siloes and give the tech to as many people as possible. Not access through an API, but the weights for the models and schematics for the robots.
I think we'll be fine on that front, though. AI and robotics R&D is open enough and people seem willing and capable enough to keep it that way, so the short-term job market issues will disappear. The remaining threat from AI is a long-term existential one.