The paperless library has as much chance as the Paperless Office, which is still eluding us in 2013.
Secure PDFs are ubiquitous in the workplace yet printer manufacturers, especially ink suppliers are far from going out of business.
In academic circles, I highly doubt ebooks will replace textbooks; PowerPoint was supposed to do that!
. There is FAR too much profit at stakes in newer yearly editions to kill that goose!
The future of reading will not be large bookshelves in people's home to impress guests (OK, maybe one or 2 coffee table books) but Facebook and Twitter updates about the book they have read.