The solution is UBI and the rich culture having UBI will create. Culture is the only answer. The larger the population the better because there will be more interesting things to do because of culture. If money get's concentrated in too few hands it is in the billionaires enlightened self-interests to finance as much culture as possible. Abject poverty for billions of people around the globe is just boring. This no utilitarian purpose of having the Olympics but it gives super rich people something exiting to do. This is why promoting culture and having UBI is so important.
Presidential candidate Andrew Yang makes an excellent argument why UBI is so important and how millions of workers will be displaced by the 4th industrial revolution: