Actually, a lot of people won't care as long as the pictures are "good enough". The N8 and 808 didn't sell well even though they had the best cameras. It's a niche and a very small one at that, much like an FM transmitter/receiver. Those who care about photography will not throw away their lenses and DSLR, those who don't are happy with their current phone camera. It is a selling point but I doubt it's as influential as you think, especially if it adds bulk to the phone.