Steve Jobs mentioned the following at D8:
One of the keys to Apple is that Apple is an incredibly collaborative company. You know how many committees we have at Apple? Zero. We’re organized like a startup. We’re the biggest start up on the planet. We meet for 3 hours every morning and talk about all the business, about what’s going on everywhere. We’re great at figuring out how to divide things up into great teams, and we talk to each other. So what I do all day is meet with teams of people.
To get great people is to let them have great ideas. I contribute ideas — why would I be here if I didn’t contribute them?