Some good points in there, particularly as far as books go. Something similar applies to music, in that:

* there is more of a tendency to go for immediate satisfaction than for challenging listening as we flick through the large amount of available music to find things we like

* we move away from listening to music an experience (including the disc as an object, the cover art, and the visual associations it can create) and consuming music as more of a commodity

In summary, the high availability of content online means that the content itself is devalued. The availability is great, but it's a shame if the increase in range affects depth.