Local TV stations were granted slices of the very limited broadcast spectrum to beam their programs and had to meet certain standards to keep that privilege. There have long been examples of local stations owned and operated by networks. The Kimmel conundrum has only turned up the heat on a doomed chunk of frozen water. The multiyear contracts and ongoing relationships between affiliates and networks lock in the current situation for a while. But when I asked an executive from a company that owns TV stations whether the current arrangement was sustainable, I didn’t get the pushback I expected.