Telephones and roads are facilities open to the public that offer pure, complete network connections. You can call anyone anywhere on the planet, and you can say anything you want. Anyone can call you and say anything they want. The same is true when you drive across country. You can get from anywhere to anywhere just by going from road to road to road.
Nobody restricts access.
Nobody closes roads because they might not like where they lead. The object of a public network is to offer a connection that is efficient, complete, and content neutral, and the Internet is a public network. The more that each of these is represented as bits in files, the more inclination there will be to make the delivery mechanism the same. Wiggle the bits one way, and you get a Web page. Wiggle them another way, and they become a radio broadcast.