I think that part of it is that most people now have all the cameras stuff they need
In fact, Rob, I'd postulate that people have far too many cameras ..... especially in terms of choice.
Remember the good old bad old days? You had a choice of a Nikon F or a Nikkormat and a similar equation with Canon and Pentax and Minolta and Olympus and whoever else you care to mention.
With the advent of the digital camera there was an initial race for pixels and a strong attraction due to novelty and desktop processing.
Maybe the camera manufacturers are yet to realise that it is time to return to the old business model to some extent. How can they justify the plethora of models where two used to do? The pixel race has been well and truly run for some years now. Model changes amount to little more in terms of product development to subtle esoteric nuances. Where is the motivation for acquisition?
I suspect that the big collapse is possibly going to impact on the higher end Canikons. Why pay the bucks is something cheaper will suffice — especially in the commercial pro market where camera output quality is confined to the final size of the image? Just how many pixels do you really need to render a clean clear A-5 or smaller image.
In the amateur market, who needs a single function device like a camera when a multi-function device like an iPhone provides not only adequate image quality for the happy snapper, but also adds the bonus of seamless connectivity?
Perhaps there are more people like myself who see no point in being sucked into a false need to upgrade. For what I do, and what my clients require, my 8 year old Canon still churns out a more than adequate result.