Maybe I am biased, but live TV is not going to die completely. News, sport, concerts, lotto results, and other timely things will continue to have demand. IP is a terribly broken and inefficient medium to deliver this to the audience, and the internet as it stands today with what we deliver simply does not have the capacity to survive a "traditional TV switch off". Some broadcasters are testing with deploying onto 5G with various trials, but most appear to be doing an all IP operation, and handing over the controls of deployment from the incumbent transmission networks who charge on site/power and other performance metrics, to telcos who will probably charge both the broadcaster and the end user per packet, as well as introducing more middlemen (CDNs) to further create inefficiencies.

There's a lot to work out before Cringely's "utopian" 5G network to rule them all can actually exist.