There's only so many billionaires and at Apple's scale you would not offer such a product for public sale even if you do custom builds for the rich and famous.

Apple makes product lines with assembly lines, its not a hand fab or custom build type of place.

At the end of the day, it’s just an Apple computer, not a Ferrari or an Aston Martin. I hardly think an Apple computer can be considered as a luxury item, unless they release it as a limited edition