What's been the biggest factor do you think is the decline of broadcast TV? Writer's strike made a dent to be sure but that should affect all of TV. Television shows in general had underwent a big boom recently, but it's just not happening through the rabbit ear antennas. But there's still some good stuff there if you know where to look (mostly in form of comedy, Brooklyn 99 for example).

Is it that major media conglomerates allocating less budget on their broadcast TV business and more into their movies and subscription based business models?

My other guess is that content restrictions of broadcast TV are now really holding it back.