What can a producer game by specializing

Producers basically manage the relationship with the artist. They find the talent, work out product deals, get contracts signed, manage them, and bring them to their conclusion. The producers do most of the things that a product manager does. They don't do the marketing, which in some cases product managers do. They don't make decisions about packaging and merchandising, but they do get involved ... they're a little like book editors, a little bit like film producers, and a lot like product managers

Absolute advantage. Which best describes how producers benefit