I believe you're correct regarding cable, because the transmissions are by subscription and across cables owned and laid by the cable companies.
Satellite, however, like broadcast TV and radio, are regulated by the FCC (and international treaty) to frequency bands set aside for that purpose.
People really do need to talk up the fact that a Fairness Doctrine will equally impact NBC, CBS, ABC, and PBS. I'd like to see somebody demand equal time on ABC to counter "The View" each day. What would ABC do, make another hour available to men discussing opposing views, or cancel "The View?"
-PJ
As for ABCNNBCBS, as well as NPR, it would be vociferously denied that these aren't balanced, and thus they would not need to be balanced. Since subjective (read: no) standards, rather than word counts or similar standards, will be used, it'll be hard to prove bias. They'll skate, while Limbaugh and the rest of talk radio, which makes no pretense of balance, will be the only radio affected (since left-wing talk radio has already gone bankrupt).