"Broadcast" as defined as something sent out to a wide audience of disparate interests. This goes back to when there was only so much frequency spectrum. The networks tried to appeal to the wide audience. Hence, sports, comedy, drama, etc. The downside is that they had a near monopoly and their "newscasts" turned into opinion pieces sold as "news."
But once cable came along and now broadband web service, the constraints are no longer. Just as their "newscasts" are challenged, the need for their programming that appealed to the wide audience is no longer needed...
Oh. You didn't mean UHF...VHF...Thanks