Your reply goes exactly to my pointI still have a working rotary phone.
Linear will last as long as there are live sports and other live events to air. Linear and streaming are not mutually exclusive. On demand and other library based streaming services will take over for some of the linear rerun channels, but there has been and will continue to be linear channels for people who don't want to search for something to watch. Those viewers will just watch what is on looking at the remaining linear channels.