PGA's Producer's Mark

The Producer's Guild of America has announced that Sony Pictures Entertainment's Columbia Pictures and Screen Gems, Twentieth Century Fox Film Corporation and Universal Pictures have signed in to fulfill the Producer's Mark certification. What this does, is that is gives producers certified credit for their work.

This article caught my eye because i noticed that three big film companies had signed on something and I was curious to know what it was about. after reading it, I noticed it was important because the p.g.a. is giving  producers credit for the hard work they did. 

As a student I could relate to someone who doesn't get credit for something they worked so hard on, and imagining that someone else could take the credit for it is even worse. As a filmmaker it benefits them because the film industry is a very competitive industry and there are a lot of people who would try to take the credit to ideas or work made by other people.

A  question I have is why is this barely being done considering there are people out to steal credit from others.