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Now, things are bundled together. If you choose an iPhone screen size first, you're implicitly choosing camera quality, materials, speed, fingerprint recognition, and such things all at once. If you like a plastic case (some people do!) then 4" is your only choice. If you want the best camera, you have to get a 5.5" phone even if that doesn't fit in your pocket. If you're buying a MacBook, you have to optimize ports, weight, speed, fancy new haptic trackpad, and other such things all at once.
Compared to other manufacturers, Apple is still doing pretty well here. But it's still considerably worse than it used to be.