did with digital downloads song by song. The music industry used to make $$ hand over fist by selling a whole album of crap with 1-3 good songs on average. When customers finally got what they wanted, song-by-song purchase, it gutted the music industry's sales so much they had to start doing 360 deals with artists where they take from everything the artist does instead of just album sales and licensing.
TV sells advertising based upon subscribers, even though the subscription base may not be watching (think crap songs on an album)....and although the TV industry won't suffer the same loss through pirating like the digital age brought to the music industry, it still will lose advertising $$ based on subscribers dropping off regular cable in exchange for on-demand.
The market is moving to on-demand, and unplugged from cable (only paying for the things I actually want to watch). TV deals are bound to phase into deals structured more towards a digital footprint....or actual viewers.