The rich were able to insulate themselves in space which is much harder to get to than some place on Earth. If the rich want to turtle up on some island because that's the only place they're safe, that's probably a better outcome for us all. They lose a lot of ability to influence because they simply can't be somewhere in person.

It also relies heavily on a security force (or military) being complicit, but they have to give those people a better life than average to make it worth it. Even those dumb MAGA idiots won't settle for moldy bread and leaky roofs. That requires more and more resources, capital, and land to sustain and grow it, which then takes more security to secure it. "Some rich dude controlling everything" has an exponential curve of security requirements and resources. This even comes down to how much land they need to be able to farm and feed their security guys.

All this assuming your personal detail and larger security force actually likes you enough, because if society has broken down to this point, they can just kill the boss and take over.