I don't directly propose blocking the rest of the world, but e.g. using a national social media app implies banning foreign ones. I'd very much like the persona

I don't directly propose blocking the rest of the world, but e.g. using a national social media app implies banning foreign ones. I'd very much like the personal data and the advertising income mined from the eyeball time of citizens to not cross the borders of my country. This is not to mention a state-run app would have just enough ads to pay for the costs of the service, and maybe even none if it's ruled in the parliament that advertisement is harmful to the wellbeing of citizens.