It's not the same thing. When you give a book to someone else, you lose a physical object and they gain one. To "give" an ebook to someone, you have to copy it. We have a whole body of law about when it's OK to copy things.
IA allowed to read books throught the website so no copies are made. When lending a book through file download they used DRM to prevent reading after the lending term ends.
I'm sorry to have to disagree with you here but in fact every page of a book you show inside of a web browser is under the law a copy of that page of the original book.
If you all want to nerd out about how eyeballs works that's cool, this is the place for that kind of thing, keep it chill, etc. But the law absolutely does not agree that looking at a painting equates to creating a copy of that painting; under the Copyright Act, the colloquial term "copy" means fixing a work into some physical media from which others can recall it.
So if you stream a movie from a hard drive over the Internet without "fixing" it anywhere, so that the viewer cannot "recall" it, but only watch, then you are not making a "copy" and not breaking the law?
So what if the book is never scanned, but there's a video stream of a camera pointed at the book, and a robot turns its pages? If we make a video streaming jukebox for books, is it 'distributing copies'?