How is it not evolutionary? The next logical step was to build rumble into the controller. It's something that's expected - why is it dumbassed? Not like I called it a 'revolution' or anything like that. Dual analog was perhaps less obvious, but many testify of it's usefulness, though it's lost on me (I don't usually play the kind of games that would benefit from DA)
I'm not a big fan of dual analog or the Dual Shock2 controller myself, but honestly, Artimus, what did you expect Sony to do? Completely ignore how successful Nintendo was with their formula? Of course they'd'steal' it. Take cars, f'rinstance - interchangeable parts, the conveyor belt, the assembly line, engine innovations etc. all happened. You look at the success of Ford with the Model T (still the best selling car ever, I believe topping even the VW bug).
In any case, I believe Microsoft integrated rumble into controllers before Sony even did (with their Sidewinder Force-Feedback pad.) If you don't like the Dual Shock, say so - but don't knock Sony for doing what every corporation in any industry has done consistently. That's just fanboyism, pure and simple.