Not at all. It's competition. Who can deliver the best for the customers?
It ends up better for us anyway - unless the companies to bancrupt.
Nintendo makes motion sensing > Sony copies > Nintendo loses sales > Nintendo develops better motion sensing.
If you can't patent it - it can be copied.
Sometimes, it doesn't favour the customers though.
MS makes amazing graphic machine > Sony is a bit late > Sony brags about their machine being better in the future > makes too good a machine with too high price.
On topic again: competition is better for the customer. Trust me. I live in Norway, everything is semi-monopolized, and I know what a hell that is.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS
