> How is it still legal for these companies to advertise and sell a whole product but only deliver part of it?
I completely agree. I bought a Galaxy Nexus from Google, and highly enjoyed the Zero Shutter Lag functionality, which was prominently advertised as a major feature of the device. Come Nexus 4, and the software updates to my Galaxy Nexus, and the feature is now gone, and it takes several seconds to take pictures.
Is there any recourse?