Then it's a self fulfilling prophecy. Apple doesn't update them because people don't buy them and people don't buy them because Apple doesn't update them.
As for ARM I am confused by some people's fascination with this processor. It's a nice processor but it's not the answer to languishing Mac updates.
If you don't consider three and four years frequent then why do you continue to use frequent in your responses?
Possibly. Either way, that's where we are at. We know a Mac Pro is coming and I am sure they have plans for a mini of sort. I think the move to ARM will give Apple more control over the form factors, release schedules, features, etc. that they can produce. I went back to some of our discussion and I didn't see the word frequent, but if you point out specifically what I said, I am sure I can provide you with what I meant by it.