It is more than just money
In 1954, when I was 8, my parents bought a set of the World Book Encyclopedia. We were a blue collar family so the Encyclopaedia Britannica was beyond their their budget.
I would sit, away from my brother and sisters, away from my parents, away from the new thing called a TV and I read cover to cover all 20 volumes in about a year.
There was something very comforting about having a book in front of you, turning the page and waiting for what wonder would appear on the next page. I don't, can't get that from a eBook, iPad, laptop, desktop screen.
When I was traveling coast to coast for KPMG Consulting (SAP R3 Financials) I would buy a book and finish it on the outgoing or return flight. It gave me respite from the electronic world that I lived in during my workday.
While the delivery of knowledge will always find its best method, books will always be books and will never go out of style.