The Internet is not public.

Paul Garrin points out that the infrastructure of the Internet is privately and corporately owned, it has patrolled [electronic] boarders, there is a centralized authority over the Internet, and the owners have agreed to provide all this while having no requirement to do so or to provide it unregulated. All good points, then he says some other stuff. For those who don't know, Paul Garrin is a video artist. He's probably most famous taping police who covered their badges while beating protesters and bystanders, including himself, in the Tompkins Square Park Riot in New York. He also purposed a revolution to create a reverse Big Brother state where citizens use surveillance to continually watch the government.
How is it that these paranoids are allowed to say whatever they want on the Internet?