Apple isn't interested in selling tech licences to other companies - they want to own their core technologies so they can sell products to consumers. And, as a

Apple isn't interested in selling tech licences to other companies - they want to own their core technologies so they can sell products to consumers. And, as an original member of the Arm consortium, they have a perpetual licence to the Arm IP (I have no inside knowledge about that, just many people who know more than me have said it)