Are you crazy? The number one complaint I heard from IGN, 1UP, Gamespot, etc after Sony's E3 conference was "this sounded nice the first time, when we heard it from Microsoft".
I mean, you can argue, the biggest copy going is Sony copying Live. Which we know they will do, right down to microtransactions, an XBLA type service, voice chat, right down to the guide button on the controller.
Sony even copied MS two SKU's hardware system, after explicitly claiming they wouldn't since it "confused consumers".
A included HDD could be argued as a bit of a copy of Xbox, even. They copied the late Novemember launch date as well, and worldwide launch of 360 too.
Sony has copied arguably, many things about MS model, such as outsourcing production to flextronics type operations, right down to using GPU with PC lineage.
MS on the other hand NEVER hyped hi-def movies. Their stance was always, we're launching in 2005, that precludes us from including HD playback out of the box, simply due to time frame. After that let the chips fall where they may.
Sure, the 512MB thing was sort of a copy, I suppose. But it's more like, doing what it takes to be competitive. That's like saying Alienware copied Dell to put 1 GB RAM in their PC or something. RAM is not a copy.
By no means am I trying to make it sound like MS doesn't copy others, or whatever. Just pointing out some things.