Imagine if they kept Macs up to date?
Imagine that... the Macs are old and cruddy and they still make 1/8th (nearly) of Apple's revenue. 12% of a company's revenue is HUGE. That's not small potatoes when you deal with a company as huge as Apple!!
If all Mac--ALL MACS--were kept up to date ASAP according to processor releases, the Macs might be making them 17 or 20% revenue. The mini, the monitor, the Pro: completely passed over again and again. Who is running this crazy train, off the rails and dancing on Ellen? Is there anyone that can put the glasses back on the walleyed leadership?
Steve Jobs told us they would fade back to desktops after developing the iPhone/iPad tech. I think he said around 2012 or so. That guy was right! The iDevice edge is essential, but you aren't going to make the hardware impress anyone, anymore. It's going to have the same, basic stuff again and again, and the remainder of additions are now novelties. (Software is a different issue) They will add a better battery (incrementally), they will add a better camera (incrementally), they will add better memory (incrementally), and so on and on; it's not going to change into something so amazing that it will rake in a new consumer base, and Samsung will probably beat Apple to any punch they are pulling back in their typically cumbersome style. The desktops and their software are the way to go, the services are fairly important, and the software for iDevices is essential (especially Siri, which should be far more advanced already).
OK, there is nothing in a desktop that will be earth shattering either, but it is nice to spend some time every year to refresh and mildly re-engineer the line. There is a gigantic market that will always need powerful desktops (not gamers) for the next decade. Someone inside needs to be a visionary ballbuster and berater, which is how Jobs got stuff done in order to meet markets and move forward.