Though I guess the journalist thinks internet is run by Google or Facebook...
the best answer to this question is simple: "The People run it".
Sounds too rhetorical, imho.
PS. Actually I'd be embarrassed if I had to answer the question "who runs internet?". If we set aside DNS, internet is basically an implementation of TCP/IP, which is a network protocol. So basically internet is run by anyone who is capable of administrating a TCP/IP network. So I guess internet is run by network administrators all around the world.
i actually think the answer " "who runs internet?" is rhetorical.
i like "The People" b/c it answers the question directly, makes the interrogator pause and think, and it necessarily puts them on the defensive, as in "who would argue with such a principle?".