@raphjd I should have stated my comment better. Several decades ago, a lot of people read books. These days, very few people do. One reason for this is the digital books you mentioned.
Whenever I go to a library, I am stunned to see all the aisles of books, with almost nobody taking them out. It dawned on me that other than pictures, all the text in all the books of a library could be stored on one modest computer.