I think there’s another possibility: people eventually accept inequality and lower their expectations and ambitions for life. A lot of energy is wasted on trying to make everyone equal when the scales have become too tipped. At some point they’re simply isn’t enough activation energy left to right the ship.

In the past (centuries ago), it seems like people simply accepted other classes were better and they could never be their equals. That’s how you end up with royal families, etc.

So in the future, people will simply work to the bone, find whatever pleasures they can when possible, and maybe just not wake up ever again on some morning before their shift starts. They will live in small simple residential units mostly for sleep, eating, bathing and watching some content on a screen.

The rich will segregate themselves away to enjoy a finer life somewhere that they can be shielded from the plight of the poor.