Time to acquire some companies Apple! Get Tesla, SpaceX, American Express and Nvidia, diversify a bit.
Maybe get into the games business too.
Most of those either go directly against or at least doesn't add to Apple's corporate philosophy (they create an ecosystem that their users have to exit as little as possible, all tied in with their hardware).
SpaceX for that matter isn't even a publicly traded company, and Elon Musk personally owns 54% of all shares outstanding, and controls 78% of the voting power. The odds that he'll sell are about zilch. Heck, even Tesla would be difficult to buy even if they wanted, with Mush owning 22% of all shares.
They work well with their corporate philosphy,if they ever had one, just as much as Beats did. For instance, American Express cards, Apple(Tesla) cars, Nvidia(for gpu and AI purposes). SpaceX? Just because it's such an innovative company which could rule space exploration and global hyper fast travel (with their rocket travel concept) one day. Basically making everything from your phone, to your credit card and car, to your travel means serviced by Apple. They would not be a trillion dollar company, but several trillions.
All those would add tremendously to the Apple brand. And I'd make Elon Musk the CEO of Apple, if he so desired.
And yeah, basically the only thing that would be missing is ruling the living room, which could be fixed with a TV and console.