It is true that books took the place of scrolls, paper took the place of vellum, and printed books took the place of handwritten ones. Maybe in the future people will consider e-books more convenient than hard copy ones. It would certainly be an improvement if students could read their textbooks on e-book readers instead of carrying heavy copies in their backpacks. And there are times when entertaining children with e-books on a small, hand-held device is extremely helpful.
But bookaholics like me will always enjoy turning battery-free pages and nothing can take the place of a parent reading a bedtime story out loud from a traditional picture book.
In the 1940s many people thought TV would make movies obsolete, and my grandfather told me when movies were first invented people said they would completely replace plays. Obviously neither has happened. I think there will always be room for both traditional hard copy books and whatever kinds technological advances produce in the future.