The basic policy of the entertainment industry towards fan-films and similar creations appears to be that they can either bully those projects out of existence, sue them out of existence, or do one or the other even after confusingly giving tacit approval for such projects. One of those effects is how fans who create content around their favorite franchises are treated.
Being fully immersed in an era of copyright protectionism, it seems that we've become numb to the effects of it in many ways.