It's too bad the vision depicted at the beginning of the article (full texts potentially available in all libraries), didn't come true. But I feel that the public did get the most important benefit from the project: the ability to search these books. I've been researching a history of science subject recently and it's amazing the amount of information I could get from Google Books and nowhere else online. And where the snippets are not enough, I have the book title and author name, so I know where to look for the information in print.