IMAGINE a television which, as in the old days, has only a handful of channels to choose from instead of hundreds, as a typical cable set-up might offer today. In a decade or so TVs will once again have only a few channels, but each will run miles deep, with content that can be viewed on demand. Netflix might be one such offering; Amazon another. Both firms are spending billions of dollars making and buying TV shows and films to sell directly to viewers to watch when they like, and on devices other than the box in the corner of the room. And other rich tech firms may join them.
