In general, copyright is intended to help more good texts become available, either under a limited monopoly, or later in public domain.
(Same thing with patents, that were intended to help more inventions be published, and not be lost as trade secrets, while also helping to build businesses around them..)
(Same thing with patents, that were intended to help more inventions be published, and not be lost as trade secrets, while also helping to build businesses around them..)