Really? Apple has been about vertical integration from the start (apps + OS + hw), at least compared to the Wintel and Android worlds. (the exception being iOS apps, but those were neither in Apple's original plan nor are a huge amount of revenue relatively to Apple; I suspect Safari, Mail, Calendar, iMessage still get the majority of the use of apps on iOS).

Deeper hw integration (buying chip designers was obvious; I do not think they'll buy a fab; maybe hw assembly if that is somehow non-commodity), or upstream integration (applications on mac osx, content sources, services) would make some sense to me. Buying a shipping company to ship the devices, probably not.

Maybe they could just buy Goldman Sachs.