This is exactly what I believe Apple meant with the (widely misunderstood and mocked) "magical" term they were using for a while. What's the difference between magic and technology? Technology has a visible, physical implementation — in the case of computer technology, that's blinking lights, buttons, wires, clicking hard drives, humming fans, etc. Apple wants to make this exposed implementation disappear. I think they clearly design their hardware by starting with the question "If there were no implementation constraints, what form would this device take?" They build something as close to that as they can with the available technology, and as technology improves, they keep inching closer.
Apple is pretty much literally trying to slim down physical form factors until hardware gets so small it disappears. It's why their only two desktop machines are an SFF device that tries to be as tiny as it can possibly be, and an AIO that tries to be nothing but screen. You see slimming down the Mac Pro form factor as something that requires an affirmative justification. Apple views the fact that computer hardware has to occupy any physical space at all as a vexing consequence of our still primitive technology, to be rectified as soon as possible.