I think that scenario is unrealistic because if a majority of people are at a point where they would go to such lengths for privacy, democratic governments wouldn't be monitoring everything in the first place. I believe most high-democracy-index countries are democratic enough for this to apply. Actual reason for these policies is that most people do not care about privacy.
I know. It's a thought experiment to show that even in unrealistically optimistic conditions, technology is still not sufficient to solve the problem. I intentionally ignored the societal component of adoption for this reason, showing that it makes no difference.
I think that scenario is unrealistic because if a majority of people are at a point where they would go to such lengths for privacy, democratic governments wouldn't be monitoring everything in the first place. I believe most high-democracy-index countries are democratic enough for this to apply. Actual reason for these policies is that most people do not care about privacy.