On What Grounds Does the Government Meddle With the Net?

SEE HERE The FCC was created to control the public airwaves which are the common property of all. The Internet is not a public property. It is a conglomeration of local privately owned nodes which are linked locally and pass packets of information around on wires. The government doesn't, on the face of it, have jurisdiction. If they have taken such jurisdiction, the question should be on what legal grounds? The Internet doesn't need a lot of government meddling unless you want to mess it up beyond belief.