I find this is at the core of Stallman's criticism of the term "content". We speak of media "content", of "content authors", etc, as if movies, articles, books, etc were just that: content, ready to be commoditized, packaged and sold. And some of it is! But we've conditioned to think of everything as "content" to be "consumed", which is depressing.
Specialization pretty much requires it, and our adherence to capitalism demands it.
You specialize to get paid, and by getting paid you can pay others that specialize to create. And you're right, it's a depressing system, but it's no less depressing than what came before that.