The rumor recently appeared about the arrival of an A10 chip in the iMac Pro gives a lot to talk about. Not only because of its possibilities, but because of the consequences that this can have on Apple computers. We no longer talk about something dedicated to a specific function such as the T1 chip of the MacBook Pro or the W1 / W2, but of a full A10 with all its power. That is not little precisely.
One of those consequences does not jump at first glance, but it deserves to be talked about: Apple's ARM chips can not be bought or used elsewhere, as is the case with Intel. 100% of the control is in Cupertino. And if one of those chips happens to take charge of the start of the Mac, the thing looks very black for the Hackintosh community.
The future of macOS can be (even) more closed than you think
Right now the start of the Mac depends on the chips provided by Intel, chips that are part of many other computers and with which Windows also starts. And that boot sequence can be modified, just as the Hackintosh do. It is changed so that the own EFI that uses macOS is loaded, and ready.
The problem for the community of people who do that is that Apple may have found a solution to stop that from happening. If in Cupertino happen to modify macOS so that its starting can only be done in the ARM processors that they design, then that boot would be completely shielded.
We would not be before an "iosified" macOS. After startup, the ARM chip could pass the tasks to the Intel processor
The consequence is that, and now, only one Mac could boot macOS. At least for a long time, because something like a jailbreak would be very difficult to get on another machine. And that machine would have to have the same CPU.
Anyway, let's not get confused: this does not mean that macOS is going to become as closed as iOS. After booting, the Mac could pass the tasks to the Intel processor. The only barrier here is the integration between hardware and software, and Apple is a specialist in just that. The developers, in the first instance, would not be forced to change the set of instructions.
More in the long term, seeing that the ARM processors of the future are on the way to being much more powerful, I imagine Macs with ARM processors that are in charge of the basic tasks of macOS while leaving the most demanding to the Intel Core. We could get to see that, and in less time than you imagine knowing that the iPad Pro are faster than some computers.