Radio is a fantastic medium, able to outlive the physical platforms that have been used to convey it thus far. Since audio content typically requires much less data capacity than video, radio has been able to surf the crests of each new generation of platform technology as it has arrived. It is now just as much at home on portable media players as it was on valve AM sets of old. It has also been much easier for radio to evolve to a personal experience, than for TV.

Its portability and ubiquity of access have been important factors for radio's success as a companion medium. It also fits well with any activities that listeners want to combine the listening pleasure with. It doesn't demand full attention and leaves listeners free to create their own imagined worlds around the soundscapes.