I mean, a camera is for taking pictures and the corresponing OS should only care about the job of taking pictures and show them later on.
Why do I need a fullfledge Android system running on my camera?
This seems more like a toy experiment.
I will ask the same question, but for a different reason— non-DSLR cameras are just becoming obsolete. Go to any touristy place, and you'll see more people using smartphones (and surprisingly, tablets) than point&shoot.
No teenager today would want to buy a p&s when they can use their phone, which produces similar (or better) image quality and already has apps/sharing/etc.
Most of my "everyday" shots (ie. shots of friends and family at events, etc.) are taken with my iPhone. It performs better than would be desirable in all situations. That's what people care about.
They are far away, so your telephoto cuts down the light, and it's too far for a flash.
That's my test for a camera.
Any camera can do well in good lighting, or with a flash. But take a picture in poor lighting and see how well it does.
This http://campl.us/posts/iPhone-Camera-Comparison finds that an S95 in ISO 32000 is equivalent to an iPhone 4S in ISO 80. That's a pretty dramatic difference.
Not everyone is using their camera in a very simple way. Why not have software on there doing face recognition, panoramics, stop frame, etc etc etc
And a really cool one. Never thought about programming a camera to do things it does not by default?