There is some truth in what you are saying. The problem is right now they have no incentive to change. If profits are at record levels like another thread suggests why cut into your bottom line? Now when guests stop coming because the quality of their product or service had gone down, they'll pour some money into the attractions and go back to some of that Disney service we've come to expect.
That's why we get half-baked ideas like "Toy Story Mania". (I know I've said it before - but did we really need another shoot-em'up ride based on Toy Story? One wasn't enough?)
A first grader could have designed that ride. Simplicity is fine, but basically you can reenact the ride in your living room with the Wii version of the game and a swivel office chair and get just about the same effect.
Or Laff Floor. Back in the day it would have been full of animatronics. Now we get...video screens.
I love Disney, but it's a shame that I no longer expect the best from them. I don't expect to be impressed by new stuff. I'm occasionally pleasantly surprised (example, Mermaid looks great - and I *LIKE* her hair, LOL - in the Disneyland version; as long as we get that with our vastly superior exterior, I'm a happy guy).
But I honestly don't expect a real, true, knock'em sock'em ride from Disney anymore that doesn't involve videoscreens. I mean, look at Soarin' (and TSM, for that matter) - longest lines in the parks, people eat that stuff up. It seems to satisfy most people.
That's why I keep hoping they will tackle a Muppets dark ride, because even if it was small in scale, that would impress me - not just because I love the Muppets, but because it's a property and ride style that WDW needs desperately. Although I don't care a lick about Avatar, I think it is quite easily the most over-hyped, gimmicky film I've ever seen, I'm just hoping we get something other than a different version of Soarin' tech and more video screen crap.