If you ever needed proof that Hollywood studio executives have no idea how to make good movies, please, look no further these screening notes from a pre-release viewing of Ridley Scott's Blade Runner. Because these professional movie producers absolutely hated the film, which is now acknowledged as not just as a scifi masterpiece, but one of the greatest films of all time.
Above is the collection of "notes" three executives from Tandem Productions made for the film after a screening in January of 1982, found by Reddit. Admittedly, most of the notes are some variation on "I hate this movie and I hate it worse every time I have to see it" variety, which might not be considered particularly helpful.
On the other hand, they did hate the voice-over... which they made Ridley Scott include and Harrison Ford record in the first place. So I guess that's kind of a wash.