You honestly think that quitting Facebook is harder than changing countries? Opting out from your country is currently near impossible for most people, and the only reason it is possible for the few who can is globalism. The place where moving between countries is the easiest is the E.U. and that's precisely because of the supra-national structure.

I am not a centralist when it comes to the official international institutions precisely because the no opt-out you describe (which is true for official institutions, not so much for Facebook). But at the same time, without international cooperation and with "every nation for itself" we end up much worse off at a personal and species level.