Prediction: The world will return to something that looks like feudalism, with increased clamping on birth rates until a few rich holders remain with their human retinues solely there to entertain and flatter them. Otherwise, AI and robotics will cosset them.

Once production is automated there is little need for workers, and once knowledge work is automated there is no need for a professional and technocratic class. Consumers have nothing to spend, so they are effectively a drag on the economy of wealth.

That world then looks a lot like the time before the merchant class developed. Everything of any quality is made for the wealthy, and everyone else exists solely at the pleasure of their masters.