With the public domain books, there isn't necessarily a file that exists for doing a simple copy/paste. Sure, many large publishers who are also selling these titles have a digital file that they created and hand-groomed. But that file is their intellectual property (even though the source material is in the Public Domain). They have no obligation to share their handy work.
What you are seeing is Sony's fault. They obviously didn't put proper care into creating their $2 digital versions of public domain books.
|