I am not really worried about a ban on the internet because since the very beginning the whole concept of the internet was that it would be impossible for it to be shut down by something like World War III.
If the United States couldn't stop alcohol during prohibition I seriously doubt any government could ever successfully ban the internet. The fact that IoT/IoE is now making it so that the most modern home appliances are relying on sending data packets through the internet a ban might be as unfeasible as it would be impossible.
What I am afraid of though is banning certain types of though or speech on the internet. Things like losing websites or being denied domain registration if ICANN one day decided to make new rules restricting freedom of expression.