Has anybody ever done research using historical books? Those will never be scanned and will never be, as they are'nt today, part of of any futile market. That is akin to selling the Acropolis and transform it in a condo. EBOOKS ARE AN ACCESSORY, PAPER IS THE BACK-UP. Books are not only novels or trivial passtime stuff. What would you say if someone scanned "The Declaration of Independance" and threw it away because it is now electronic? Granted that the comparison is a little harsh but we must remember that e-content is volatile. Paper will never be replaced. E-content is practical for everyday use just as you would'nt wear your best clothes to repaint the living room.Period.
But I do agree that the Library's vocations or uses will evolve. As Alex has pointed out somewhere else, libraries have a social, physical, people gathering function essential to every scholarly activity. If you wish, you can base your life on something volatile and superficial, but it is your choice only. The Library is humanity's most stable repository of knowledge, and has not met it's match yet...