> the plaintiffs discredit this denial because of the negotiations between the parties for the purchase of rights in the play, and because the similarities between the two are too specific and detailed to have resulted from chance.

For a movie an analogous scenario to publishing an archive with infringing material might be unknowingly capturing a copyrighted piece of art in the background of one of your shots and then being sued for it. Except in that case you're profiting from the movie (at least presumably). To make it analogous to publishing archives it would have to be something that isn't profitable, perhaps uploading an amateur short to youtube.

Actually this provides a perfect example. If you shoot enough documentary footage in the city you are almost guaranteed to inadvertently catch something that's copyrighted at some point. Unfortunately the scenario breaks down because unlike the internet you can't easily retroactively edit all distributed copies of your video. Unless perhaps it's only available via streaming services? But then we're back to profiting again.