Capability is one thing but a focus on the actual product, as an teleological destination that is built rather than something cobbled together as a solution to a problem about how to sell what you have generally has taken them the right way.
It's nice to have these types of niches when they make you money. But the Mac isn't profitable like the iPhone is, and probably makes less money than the iPad does if you count aftermarket service sales. The further Apple drifts from their roots as a computer manufacturer, the more the Mac starts to look like a liability to them.
Apple's Last Stand is their prosumer segment, and once that's gone I don't think their vertical integration playbook gets them anywhere further. Their bottom line is dependent on finding new ways to make B2C profitable, which has resulted in subscription services like AppleTV/Apple Music/iCloud so far.