but see.. a switch IS a fundamental component of a joystick... I mean, if you went to the arcade operator and said "umm.. Ms Pacman man wont go up!" would he say.. "What? there's nothing wrong with that joystick shaft!" I mean.. no ---Cleveland steamer---.. "consumable" or not its necessary for the device to operate. By your definition an engine in a car could be consumable. It can be replaced, they wear out. Rear ends, axles, wheel bearings.. all consumable and replaceable.
Common sense rules the day here; it is how a general consensus is formed regarding language usage.
And like I mentioned earlier, the more someone understands a problem, the less likely someone is to blindly refer to something as "broken" just because it isn't working right. E.g., in your example, while you may
think the joystick is "broken" because Pac-Man won't go up, the operator that you tell about it is likely going to think "worn-out microswitch" and replace the sub-dollar consumable part in about a minute's time.
Lots of things don't work when one of their consumable parts fail, e.g., when a light bulb blows. I already know that people don't generally refer to such a condition as a "broken lamp", despite the fact that the lamp doesn't work—but feel free to try and convince me otherwise, lol.