If they rebranded everything with Apple, what are we going to call a Mac Pro and Mac mini? An Apple Pro and Apple mini?![]()
Macs are by definition Apple. Their entire name "Mac" (or "Macintosh") is unique, there is no "common word" part. If you go into a shop and ask for a Mac, they show you Apple products. There is no way for anyone to confuse the common word portion of the brand because there is none. And Macs are not that important for Apple's revenue either (sadly) plus they have a much longer historical baggage.
iPhone has a unique identifier (the "i"), and a common word. iPhone. Remove the unique identifier, and you get Phone. Apple will simply change the unique identifier from iPhone to Apple.