Of course they don't cut costs over something you don't pay for. Talk about a straw man, sheesh.
But that's not what it's really about. If you cancel your cable and get Netflix, you are saving bundles of money. I know more than a few people doing that, and I am so freaking close to it I'm not sure why I waste the money on TV anymore other than for ESPN & live sports. If not for that, I'd be long gone.