Most people watch many networks because they aren't watching news programming 24/7. SyFy for the spooky movies, ABC for Shondra Rhimes, History Channel for Pawn Stars and Counting Cars, A&E for 1st 48, VH1 for Mob Wives,
Spike for Cops, TVLAND for Roseanne, Bravo for all the Wives shows and Million Dollar Listing, E for Kardashians....etc
Most people aren't only on one channel.