Interesting although they could not wipe out all books. There is always
www.abebooks.com for hard to find out of print books. and Google has just announced their EBM or Espresso Book Machine that is in several places now that will for the price of a coffee or so spit out your out of print title professionaly printed and all. (although, seeing the Google CEO attends the Bilderberger meetings, me suspects that he would ensure that no "contentious" titles were ever stored on their EBM.
Mind you, there are always free copies of many of the books online when you go to places like PDF Search Engine and similar sites....