Well, there's another way of looking at it another way of looking at it
Bombadil does not move the story forward
Perfect description, and rings true with the pacing Jackson has for the film. In short, Tolkien recognizes a depth to time that is off the screen for Jackson. In moving the story along for box office value, the whole concept of power is shifted. Bombadil plays with the ring. Jackson is no Bombadil. There is no Bombadil for Jackson.