A national firewall or nationalizing those industries?

I'm not sure which your asking and both options have their good and bad.

Both would be a hard sell in the United States but if we were starting a country from the ground up it might make sense to nationalize industries that are of strategic importance or fall under the umbrella of necessary utilities.

The problem with nationalizing industries is technology is always changing and progress is in the hands of politicians who control funding.

Would the internet we know today even exist without private industry and innovation?

How far along would green energy be if it were left to the revolving door of politicians in Washington who aren't always in favor of funding scientific projects.

What would be the incentive for innovation if the government could take and nationalize your work?