The only thing I'm beginning to dislike more than fanboys are anti-fanboys. I think this is a perfectly legitimate question, but some people just about have lost their minds over any question that is asked which might result in conversation that is positive or negative about one company or the other.
I'm disappointed Playstation was ever released, because personally I think every great Playstation game would have been a better Nintendo game. And Sega would probably still be in the hardware game, focusing on First-Party titles rather than their current shotgun-approach. Even with my admitted bias, I don't care if someone else likes PS and hates Nintendo, and to cut off any intelligent discussion regarding competition between video game hardware manufacturers is disingenuous, I think. That's how you end up with mindless sheep buying whatever system they see Shaq playing in Kazaam Revolutions instead of buying (and supporting financially) systems based on their merits.
As for what Sony stole, they probably did "copy" several of Nintendo's ideas, but we can all agree I think that they took over the market mainly because Nintendo gave them sufficient incentive to develop a disc-based video game system and then put them in a situation where they either scrapped their investment or released the system as competing hardware.
As for the OP's original question, what's wrong with someone asking the question so that they can have an intelligent comment/reference point if a legitimate conversation ever comes to that subject? I didn't see any malice in the original posting...