There is an implication of advertising; old books obviously exist but no longer advertised not are the front and center when you enter the book store.

I guess the implication is that without such advertisements, old books are lost media for young kids. Their first brush is with new media that IS advertised to them, and upon finding it not compatible to their tastes (at least acc to the article) young boys tune out of the reading hobby altogether.

Obvious retort is that this where parents should step in... but that's a whole different debate.