Evolution takes time. Early TV programmes were essentially visual recordings of radio programmes, but programme makers grew to understand the medium and TV took its rightful place alongside radio as a second platform.
We are at a similar turning point in the internet age. We still, in the most part, define our digital agenda through the lens of broadcast output, and rightly so. But times are changing, and the internet is taking its place alongside TV and radio as a third platform in its own right.