To over-simplify, revolutions happen when young men get bored, gather into mobs to entertain themselves, and then somebody with a cause directs that mob into action.

The standard way to prevent revolutions is to channel the energy of young men into a productive job and a family.

But today, bored young men entertain themselves with video games etc rather than gathering in mobs to entertain themselves. We don't have large gatherings of aimless young men anymore.

We were all fine with having a bunch of pretty poor people around us (let alone other countries where people live horrible lives). Why should anyone care white collar people are going to get hurt? Who said we have enough power/motivation to meaningfully revolt?

Why haven't the poor revolted already?

I hope you're right but I don't think its a given this will happen.

When has an uprising (or revolution) been anything other than a disordered mob? I wouldn't expect any such transition to be orderly and well-planned. It will be reactionary in order to quell the chaos.

Yep. That's why there WILL be an uprising. When? I don't know. When the pressure becomes too high to bear, and risking your life seems like a good option compared to just hanging in there. But maybe by that time most humans have been genetically engineered to be happy to be serfs, and oligarchy is a genetic condition now.