It doesn't matter if it's an iPhone, iPad, Mac, or whatever else. They are all just computers. The difference is in the Jobs To Be Done, and I think it is a very minor, yet important difference.
I suspect the lack of focus on Mac is because Apple has to know that it is a dying product. This is also the direction Microsoft is going with Windows. In the future, we won't differentiate between our different devices in the strict terms we do today.
For the average consumer, their phone can run all the productivity apps they need. For developers and artists, this is not yet true, but it is surely coming.