Moving to a different country isn't quite that easy, it usually requires some money and a job in the country you want to move to.
Also, even if you hate your government, you still might have a social circle that you don't want to leave behind, or maybe responsibilities within your family you cannot just abandon.
There are two ways of handling security vulnerabilities.
One is to try and find them before the "bad guys" do, then fix them. The other is to do nothing and just hope the "bad guys" don't find them (or have already found them and are already exploiting them)