The basic foundation of the law permits limited copying of books for "fair use". When you went to college or school and did a book report, and quoted material from an encyclopedia in the library, did you pay the author? Have you ever used a scanner or Xerox machine to copy a page from a book? Did you pay for it?
Fair use is the foundation of society.
Are you aware that millions of manuscripts, books, and articles sit decaying in library basements around the world, because the authors are dead, or the publishing company is, and no one has the rights to reprint them or can track down who owns them? There is a giant black hole opening up in our culture due to obsessive and onerous copyright, and potentially valuable works are not findable, and may be lost forever because the libraries can't afford to preserve them digitally, or legally aren't allowed to.
This chart says it all:
http://www.slate.com/blogs/moneybox/2012/03/30/infinite_copy...
Digitally archiving and indexing the world's books is of enormous value to our society, and such action deprives no one of money from selling books, that's a ridiculous scare tactic, akin to wanting to be paid for someone displaying the book jacket or table of contents of your book.