Peoples really misunderstand this statement because they don't want to accept that maybe peoples on top of a billion dollars company may note care that much about money.
I think we need an example.
I am a teacher, I really love my job, I enjoy my subject, the relationship and conversation I have with my student, I enjoy the liberty and variety of topics I can talk about in class (I teach philosophy).
Really, I am passionate about what I do.
But yes, i'm getting paid, yes if the college would stop paying me I would not wake up 5 days a week to go teach. Yes I would love to make more money from this also.
So now, can I say that I'm not into this for the money ? Yes I can, because even if i'm being paid to do it, the reason I choose this career in particular it's because I really have a passion for it. When I wake up in the morning, I don't think about my future paycheck, I think about my class and what I will teach today.
But of course, it's still important that I can live from it, but it still is not the main reason, I still can have a passion about the work in itself.
This is the exact same thing that Jony Ive mentionned, the fact that peoples in charge really have a passion about creating products, they don't simply think about their bank account. Even if a job can bring you millions of dollars, it still very possible to be passionate about it in a deep and honest way. And actually that's one reason why they are so successful.
The best example of that is Steve Jobs. The guy knew he had cancer back in 2006 and knew at the time that his life expectancy was considerably reduced. The guy was already filthy rich and could have just left Apple and spend his money before he died. But still, he instead choose to continue to work at Apple and continue to be very implicated in the creation process of most of Apple flagship products.
Seriously, if that is not a proof of not being into something for the money I don't see what will...