When a copyright has ended and books that I have written have been passed down to my children's children and their children, why does the book become a public domain. Why can anyone just publish that book. Surely at the end of the 70 years the then owners of the book still own that book and must still have rights to the ownership. How can I ensure that what ever family member ends up with my work, that they keep sole ownership of that copyright.
All works of art go into public domain sooner or later. Depending on your country"s laws, In all due respect, unless you are famous with a famous book you should be so luck your future relatives will even have your book. In 2121, that will be five generations away, and let's hope they have a copy of your book in their house. Old things are not revered.