Speed of delivery. FedEx is nothing compared to the speed of the Internet. Just log on, download your book, and start reading. Even large books are small when they're eBooks. With eBooks, authors can self-publish.
Companies can gather and update strategic information in one compact file for sales staff.
Teachers can compile customized class readers at a reasonable price, without infringing copyrights. Infinite user possibilities. Web-like interactivity and search capabilities. Lower costs for everyone. Because there are no printing, storing, or shipping costs, publishers can reduce their overhead, thereby ultimately lowering costs to consumers.