The European Commission paid the Dutch firm Ecory for a study on how piracy impacts the sales of copyrighted music, books, video games, and movies. But the EU never shared the report—possibly because it determined that there is no evidence that piracy is a major problem.
LINK to the archived Gizmodo Article.
LINK to the archived original study.
NOTE: The study is in its original and unedited format. I included it so there will be no question as to the veracity of the Gizmodo article's claims.