Mmm... publishers have shown a notable lack of interest in what young readers are interested in so far, apparently on the grounds that young readers don't tend to own hardware suitable for reading on. (And I
still think a reader for PSP would be a killer app if combined with books for young adults.)
As far as "collecting" or "hoarding" goes, yes, there seem to be quite a few people out there who collect (or hoard) entirely for the sake of accumulating titles, whether or not they are at all interested in the content. This has been suggested as one reason some of the content is so badly proofed and formatted.