The MPAA/RIAA are not "The Movie Stars" they are "The Movie Studios." It's not even that. The MPAA is an industry lobbying group that the studios are members of. There is no big name movie star that is the "face" of the MPAA.
I do know how PR works. I also know that the MPAA's sister organization's fight against music piracy had some big name stars from their industry side with them (e.g. Lars Ulrich), but at the same time many big name artists (Trent Reznor, Radiohead, etc) did not side with them.
If the MPAA tries to put a "face" on this by pulling in celebrities, that could equally backfire if other celebrities come out against it.
> for Angelina Jolie to adopt a dozen new kids
So the MPAA tells Angelina Jolie how many kids to adopt now? Did the order come directly from the Illuminati or The Bilderberg Group?
It's a stretch, but one could imagine google's competitors piling on as well.