What argument does the author make in "the light at the end of the publishing tunnel? "

The author makes the argument that people are no longer reading books; instead they are watching tv and playing on their phones.

As a result, the author argues that ebooks will not save the industry; he ends his article by saying "the light at the end of the tunnel" is really a "speeding train" barreling toward us. By this he means that ebooks are not a source of hope but rather of destruction. 

Continual is the closest