National publishers restricting international books

Publisher X publishes ebooks of an author in country X.  Publisher Y publishes ebooks of the same author in country Y.  Can Publisher X pressure the author over the terms of their contract with Publisher Y -- in particular, if Publisher X insists on all of its books having DRM, and thus wants Publisher Y to use DRM?

Publisher X's argument is that if Publisher Y sells the same ebook without DRM, then pirates will make the book easily available over the Internet and nobody will buy the book from Publisher X.  The problem is, that doesn't seem to be true, insofar as the DRM is not actually keeping pirates from accessing Publisher X's books and putting them on the Internet.
Shared publiclyView activity