There’s no such thing as entrapment in the world of copyright, unfortunately.

That said, something kinda similar did happen in the Viacom v. YouTube case. It’s been over a decade since I read it so forgive me, but I think YouTube discovered that Viacom themselves had been uploading bits of The Simpsons, and I believe sometimes processing them to look like amateur clips because they believed that the exposure helped them in the long run.