Archetypal Characters have their place, mind you. If an author’s focus is on Plot or Theme, he may want to create easily identifiable Archetypes as a shorthand to save space and time. As soon as the edges of an Archetypal Character are sketched out, audiences (who have seen these Archetypes time and again) will fill in the rest, pending information to the contrary. In this way, an author can free up time or pages for aspects of the story which may be much more interesting to him.
As a result, Complex Characters are often the first things torn down in an effort to conserve media real estate. This leads to a glut of action-oriented stories populated by stick-figure people. Whenever there is a glut in one place, you will find a deficiency somewhere else. The imbalance between glut and deficiency creates demand. Box office is directly proportional to demand. No more need be said.
From the Dramatica Theory Book