The Centralized Internet Is Inevitable
Well, the author is talking about the "mainstream internet" that most people think of: we used to have to point out that the internet wasn't the same thing as the world wide web, now we have to point out that it isn't the same thing as facebook, twitter and amazon.  There's nothing inevitable about a centralized internet technologically: packet-switched networking is by it's nature decentralized.  However, my pipe dream of someday seeing a truly decentralized mesh network that nobody can ever control or censor gets less hopeful every day - not because it's technically infeasible, but because it would require more people to get on board than I believe people have the will for.