Let ‘em try.
It can move off shore easily enough, there’s satellite radio which the fcc can’t touch and streaming internet.
You can’t shut it down except in a vindictive sense.
But it might be fun to make broadcast tv subject to the fairness doctrine like it used to be. Facist Katie Kouric having to make nice with
Ann Coulter?
Buy XX radio stock.
You need a license from the government to access the comm sats. The government can control those easily enough.
The Internet? My guess is that the Government will require all internet traffic in the US to flow through The Big Machine Super Server, replete with "gatekeeper" software that will scan for "subversive content" (i.e., anything critical of Lord High Master Obomba).
Offshore? The US spent a lot of money on radio jamming technology in the '50s and '60s, primarily for military applications. But that can be adapted for civilian use. You can always "modify" radio receiver technology so that it only accepts and processes "approved" transmissions. The pending switch to DTV is a template. Everything becomes "obsolete" and you can't view it unless you get an "approved", official converter box (filter).