I've noticed this for some years now, and perhaps others have as well.
Since the rapid development of digital capture, is our interest (photography), currently too focused on technical advancement and it's ramifications?
Now I know this is not a new phenomenon, I experienced it with film, but at least then we all had a commonality - the 35mm format. Now it seems photography is just as much about consumerism and brand loyalty as it is about the craft.
I would also state this is mostly seen in the amazing growth of digital S.L.R.s over the past five years. It is more the fault of the imaging corporations themselves than photographers, we all seem to be at the whim of companies that exploit the divisions of us into such groups based on what brand we use. The whole full-frame debate runs with this exploitation.
I had a discussion with a photographer yesterday, and we agreed how great it would be if we could all share things better amongst ourselves and not be locked into being a supporter of one brand over another...but i guess, that's the way it goes.