Yes but yes, maybe?
Discussion
The book cover art on television or movies has been inspired by the writing so the author may choose to have the artwork and should be given this fit free.
As a reader one must embrace the artwork for a few minutes and disregard once literacy appears.
I think it's just cheap. And what about if it's athe estate and not the author? Maybe your point still stands. I think I see it more cynically, just cheap and perceived as an association with a more popular medium, with little regard to the actual text. (Obviously the film/screenplay may also have little regard to the actual text, a lot of film adaptations are poor and also probably quite cynically done too). It's an easy win in the reverse, the fans of a book are an almost guaranteed audience for a film adaptation. I don't think always/necessarily it is done with good intentions.