So people don't change the channel all night? They get home, turn the tv on and that's it? Do they not have remotes? Or, they'll watch shows at 7/8pm on NBC but then change the channel at 9 to watch something else instead of Leno, then sit through just any local newscast and automatically watch what comes on after that instead of watching the Tonight Show?
i'm sure some people do, but apparently not everyone as this has been talked about with regards to television shows for as long as i can remember.