Apple doesn't really care about the Mac. If they cared none of this crap would be happening. Their focus is almost solely on the iPhone as that's what brings the money in. That's rather short-sighted.
...or, they have a delegation problem, where 4-5 guys at the top cling to every single product decision that needs to be made, and thus with the bulk of their time invested in THE product that generates most of the revenue & profit, other stuff just can't evolve at a pace it would if management could let go.
Apple grew from the brink to largest in the world really, really quickly. When it was so small it was about to go under, it's Savior rode in to the rescue, focused on a few things and helped it rise. Then, it was able to ride those few things and just a few new things to "biggest in the world." Was there any time in there where classic corporate delegation could occur, creating mini-Saviors to lead/run/own responsibility for expanding product lines? Or did the company cling to what seemed to be working so well, which was hold even the minutia decision-making at the very top?
The problem with the latter is that you can only do that so long. Even a genius is mortal and limited to the same 24 hours in a day as anyone else. In his waking hours, only so many decisions can be made. Objectively look at all Apple products that are not iPhone and ask yourself if each is getting the focus it appears to need. Are Macs getting sufficient attention? How about

TV? How about iPad? iPod Touch? Etc. Now think about what Apple would look like if everything not called iPhone got internal attention like iPhone? It's not like Apple lacks the staff or the money to delegate decision-making to competent people so that everything can get the focus and evolve on par with the golden goose.
So yes, it could be that they don't really care about non-iPhone products. But I doubt that. Personally, I
speculate the biggest company in the world runs internally like it's still a relatively small company. As such, everything else just can't get onto a (few) decision-makers desks as often they need attention and progress-driving decisions.