The PTTs are irrelevant to the discussion. It is of far greater likelihood that voice becomes a subset on the data traffic than that a separate voice network persists into the next century. At any rate, organizations are already using Net telephony in commercial settings, c.f. IDG, et al. AI generated art.
Real multimedia shows.
That is, shows that employ other senses than hearing and seeing, such as smell, touch, or taste. It is possible to introduce, for example, plot-related smells in a movie theater, but no one seems very interested in doing that.