Copyright laws are quite bad as they look today imo. They are supposedly made to improve creativity but when big companies buy up different IPs and patents they stifle the creativity more than anything. Look at fantastic four, Sony has the movie rights for that IP and they damn make sure that they produce movies often enough that they keep it, but only juuust often enough. If some other studio, small studio or indy producer wants to try they should be able to.

Another thing is lotr, Amazon has the rights for some parts but not all, meaning they can not write about a character if it wasn’t in the ending section of the books. This stifles their creativity, and it’s not even the author that controls this - it’s the descendants! Why does the descendants have such control over something they did not create is beyond me…