content: That's garbage. Sensitivity and sensor size do not change with zoom. This should be very obvious from the fact that replaceable lens cameras have exactly the same sensitivity and sensor size while the zoom changes. What does change is light gathering - the more you zoom, the less light gathered. This is partly compensated by the stabilisation, however. Sharpness suffers a bit too. However, none of that makes it a "zero-sum game", a term which I don't think you understand. Also, having a non-replaceable lens does not make a camera obsolete. Lenses don't age much at all. The main part of a camera that obsolesces is the sensor, and that isn't replaceable in any camera.