I really don't understand the argument in favor of nationalizing the Internet. It's not the same kind of medium as the postal service. It has more in common with media and telecommunications industries.
The government shouldn't act as an ISP and shouldn't have any control/ownership of the Internet. If you thought government-controlled media and the surveillance state were bad, just imagine the natural progression where your nation has input on the whole thing.
Decentralize, don't nationalize.