User Experience is Apple's business, not hardware, and I think "make it just work" is a design philosophy whose success is largely responsible for the company's ascendancy.
I agree. It's easy to look at what a company produces and not think of anything else as being their real 'business'. If I am allowed another analogy.......
I haven't been in a McDonalds for more than twenty years (last going when my daughters were children) but I do recall wondering why McDonalds was doing so much better than anyone else in the hamburger business. Let's face it, how tricky can it be to make a hamburger?
I realized that, while hamburgers were involved in the business transaction, McDonalds success was actually due to selling an experience that the kids liked, with bright colours, toys, a place they'd see their friends, et cetera.
Just as importantly, they were selling something else to the parents - cleanliness and a safe environment.
ryck