I worked at a place about 10 years ago where one of the projects was with penguin books. They spent 12 months with a team of several developers building this as

I worked at a place about 10 years ago where one of the projects was with penguin books. They spent 12 months with a team of several developers building this as amazing product for students where you could pick chapters from several books to print your own single book. All done in ajax which at the time was rare. It was really good. Random house media decided to not go ahead with, it I think because of copywrite rules etc and binned it. Felt for the devs. They were so proud and put many late hours in.