The issue is more complex than digital access, although that would help a lot. The importance of a book may not be recognized until it is reviewed by experts, and experts are a rare resource. For example, very few people have knowledge about ancients documents in greek, latin, coptic, and related languages. Even if they had access to all libraries in the world it would take a long time to recognize what is new and what is just another copy of a well known book. To make matters even more complex, some books have been copied on top of even more ancient documents. Understanding when this happened and what was there is another difficult problem to solve.