Want to add something to my previous post.
When I first read the interview in this thread I knew that comments like "Sony just waits so that they can copy Nintendo and MS." will come up. Seriously guys, if you hate Sony then do it for your own and don't write BS like this. It's just annoying, so stop it. (Why can't this being considered trolling?! btw...)
Sony isn't keen on innovating, they'd rather let other people do that and then improve on their designs.
They saw what Microsoft did with Live and made the PSN based off of that. They looked at what people liked and didn't like to make it.
They saw how Nintendo captured a new marked with the Wii and made the Move. They decided to make a Wii that the casual crowd could still enjoy but also provide games the core gamers have been screaming for.
As much as you don't like people saying it, Sony is good at taking a look at what others are doing and then trying to make it their own.
As you said: they improve! Improving is not the same as copying!
You can call it whatever you want, it doesn't much matter. Sony copies things and tries to make it their own.
The Move for instance is a great example. Anyone who says they didn't copy the Wiimote is just delusional, plain and simple. That said, it very well could be better, we'll see what they do with it.
My point is just because they copy, improve, or whatever you want to call it doesn't have to be a bad thing and pushed under the carpet. Sony very much copied the Wii Remote, good for them. They saw something successful and wanted in on that, there's really nothing wrong with that.