What if a parent only read to their child using an ereader or tablet? Do you think their child would ever explore paper books? I think they would. Kids love to manipulate things with their hands, and there’s a whole world of sensation and textures in a book-book.
So I do think babies would still be gumming their board books, and toddlers would still flip through their first picture books with avid anticipation of the next page. Older kids would still want to curl in a corner with a chapter book, lingering over each illustration. Because a story is a story, in whatever form.