there are lots of moments of parallel evolution as new technologies are made available- for instance, nintendo considered a controller free camera system before settling on the remote. by the same logic of 'sony's remote came first', you could say nintendo had the idea for kinect before microsoft.

the thing is that nintendo didn't develop that camera, much like sony sitting on their remote. the same technologies are often shown to every company and it's up to each of them to decide which works best. sony obviously didn't think much of their motion system at the time, and their adamance that the wii's motion controls would fail evidence that. nintendo had the vision to see it through and sony is playing catch up now.

point being that i'm a rabid fanboy who's still going to consider move a rip off in some way and there's nothing you can do to stop me. bwahahaha.