Good luck with that! The most authoritarianists have ever managed to do was make it illegal for people to leave their inhuman regime: guns on borders, pointing inside. Not surprisingly, those countries were quickly outcompeted by free countries.
Europe is divided between countries deeply infiltrated by Russia and countries who can’t wait to escape and write their own futures. UK, Poland, Hungary will welcome fleeing capital. Brexit wasn’t the last exit.
With its anti-business attitude, tiny high-tech industry and lacking innovation and creativity, Europe’s importance in the world is vanishing fast.
The future is in Asia and Eastern Europe. And US, of course.
Which brings the need for inter governmental regulation.