Digital Domain - Will Piracy Become a Problem for E-Books?
nytimes.com
nytimes.com
http://www.google.co.in/search?q=the%20lost%20symbol%20rapid...
Books have an advantage on other media in that they are traditionally physical and their quality (when they are presented in a quality form) will still help sell them.
Having said that, the day someone manages to release a way (iphone app?) of letting you scan books easily (for book authors but lets not pretend it won't get used both ways) will be pretty awesome.
You can even purchase a PDF/book combo before the book is completed and have access to a (constantly updated) beta version of the PDF. When the book is completed, the PDF is finalised and the book itself is mailed to you.
That would have for a pretty boring article, though.
If you apply that principal to e-books, which cost almost nothing to copy, and therefore don't reasonably need to be checked out or returned, you have to remove all DRM, thus destroying the e-book business model.
Unfortunately, librarians have bought into the DRM mindset, and are putting into place (or planning to put into place) systems like the one you describe.
In my opinion, if a business model requires there to be no public libraries or a substantially reduced public library, then so much the worse for the business model. There needs to be an analogue between the world where books are things made of paper and the world where books are made of bits.