I agree. I'm as much against the forces of centralization and government meddling as the next guy, but this seems a bit alarmist. Surely the Internet as a whole does more good than harm to the Powers That Be. And even if they did want to shut it down, it would take a global coordinated effort on a scale the world has never seen before. Probably the best that can be accomplished is some form of censorship like China's Great Firewall.
Personally, I'm betting on Ethereum to provide the backbone of a decentralized Web 3.0 that will be even harder for governments to control. If the Ethereum web takes off, something like ICANN won't even be needed as web addresses themselves would just be accounts on the blockchain. And then there's Maidsafe and Lbry as well which look promising.