Anyone can throw in a few megapixel sensor. The problem is getting a decent lens and flash. I bought a 12 megapixel camera with a 5x optical zoom and really close macro focus for $100 about a year ago. You might get the same sensor in a phone, but they'll put on a crappy little small aperture lens to give you enough depth of field to get away without focusing and a digial "zoom", but it won't be nearly as good as a five year old digital camera.
It;s just the PHD (push here, dummy) cameras that will disappear. In turn, the DSLR will get cheaper, and along with better cameras in phones, will fill in the gap the PHD cameras left. There’s already a phone with dual lenses to shoot 3D pictures. I wouldn’t be surprised to see, in a couple of years, phones with 1 or even 1.5cm lenses, and maybe even small telescoping lens stacks like the smaller PHD cameras.
It;s just the PHD (push here, dummy) cameras that will disappear. In turn, the DSLR will get cheaper, and along with better cameras in phones, will fill in the gap the PHD cameras left. There’s already a phone with dual lenses to shoot 3D pictures. I wouldn’t be surprised to see, in a couple of years, phones with 1 or even 1.5cm lenses, and maybe even small telescoping lens stacks like the smaller PHD cameras.