The example that sticks out in my mind are the Sony NEX-series cameras. These are cameras with sensors far larger than most point and shoots, but also do not ha

The example that sticks out in my mind are the Sony NEX-series cameras. These are cameras with sensors far larger than most point and shoots, but also do not have the bulk of SLRs - high performance at a pocketable size. Sony's entry into this market came after the extremely innovative and disruptive launch of the Micro-Four Thirds format by Panasonic, Olympus, et al, which were the first products in the category. But far from being a "me too" or a ripoff, Sony took the core concept and advanced it further. They put an even larger sensor into the machine without increasing the bulk, engineered a ground-breaking new viewfinder (generations ahead of anything Panasonic and Olympus had), and put focus into the camera's software that is unprecedented - focus peaking, touch-to-focus, etc. Sony looked at a disruptive entry in the market, distilled it down to its core, and took it further than the incumbents. That is IMHO the difference between "copying" and "stealing".