here's an example of what I have in mind:
some years ago (many years ago?) there was a short-lived furor over a book written by William Manchester (on the Kennedy assassination?), which was supposedly plagiarized material. I have no idea how it was finally resolved, if it was resolved at all. my only concerns were: was the book worth reading; and if it sold at all, did the right person get the proceeds. who actually wrote it seems of no real gravamen as it pertains to my interests as a potential reader.

(this would not hold in the case of a prof. grading papers; the interests of the parties are quite different.)