Quote: I think there are four reasons.
Smartphones
Satisfaction with current DSLRs
Lack of innovate products
Global economic downturn
So, let's see the four reasons:
(1) Hard to imagine anyone both satisfied with using a smartphone's camera and having the slightest interest in a dslr. Why would anyone even consider buying a dslr if his smartphone was good enough for him?
(2) This seems to be the only substantial reason in the set. Yes, there is an innovation plateau, but PC's have reached a similar plateau, and I don't think they're going away. One can't do serious work on a tablet. Plus, entry level DSLR's can still be made smaller and cheaper. And, after all, innovation is called
innovation because it is about bringing into existence something new. Who knows what kind of new technology will be integrated into dslr's 5 years from now?
(3) This is just a restatement of reason #2.
(4) This reason is circumstantial and general; not specific to the dslr market.