What the other guy said does make some sense. Heres some info from an (older) anandtech article -:
AMD, Intel and NVIDIA all make money by ultimately selling someone a chip. ARM’s revenue comes entirely from IP licensing. It’s up to ARM’s licensees/partners/customers to actually build and sell the chip. There are two amounts that all ARM licensees have to pay: an upfront license fee, and a royalty.
The upfront license fee depends on the complexity of the design you’re licensing. An older ARM11 will have a lower up front fee than a Cortex A57. The upfront fee generally ranges from $1M - $10M, although there are options lower or higher than that (I’ll get to that shortly).
The royalty is on a per chip basis. Every chip that contains ARM IP has a royalty associated with it. The royalty is typically 1 - 2% of the selling price of the chip. For chips that are sold externally that’s an easy figure to calculate, but if a company is building and selling a chip internally the royalty is based on what the market price would be for that chip.
So it seems both Apple as a designer, and Intel as a manufacturer both need agreements in place with ARM for things to go ahead. This seems to be confirmed by the wording used in the relevent bloomberg article -:
Adding licenses for ARM’s technology could open up that business to fabricating chips based on those designs for companies such as Qualcomm Inc. and Apple Inc., which now have their chips produced by Taiwan Semiconductor Manufacturing Co. and others.
I could be reading too much into it, and be totally off track, but it seems that way to me at least. Someone could always email ARMS IP licensing sales team
https://www.arm.com/products/buying-guide/licensing/index.php to confirm if they truly cared.