Because that's not a trivial task?

It's a long and difficult process to get citizenship elsewhere. It's expensive to move or start over (even within the same country). Most people can't afford to bring their entire extended family. And you have to find a new job when you get there.

Capital flows across borders easily, labor does not. It's a state imposed arbitrage system where capital flows to the cheapest labor but labor cannot move to countries with the highest wages, thus ensuring a race to the bottom with labor rates.

My partner and I both have dual citizenships, but not for the same countries. That gives us an advantage that others don’t have, and while we’ve been working on leaving for our own safety, it is difficult and complicated.