That's one way it can go. But can also work where the final vision is a collaborative effort on the part of all the people working on it.

Apple's strategy is actually originally inspired by the Beatles, where five people all contributed and the resulting songs sounded nothing like any one of those people in particular. I'm certain if Steve Jobs designed everything on his own, Apple would be different than it is with a dozen people all working on one thing. And Jonathan Ive says this directly in interviews. He refuses credit for his work, because in his mind it's the entire team working together that's responsible for his final work.