The productivity gains from AI will make new jobs possible and will free up capital to be deployed in new economic creation. That is a cycle that has been essentially non-stop for the last 200-300 years (particularly aggressive and accelerating in that time frame). As populations decline and population growth stagnates, we won't have anywhere near enough people to fill the job openings in the future. The working class will benefit extraordinarily from the AI boom, it will raise their wages, it will produce an immense bounty of new jobs that will mostly go unfilled and it will drastically improve their standard of living.