Maybe they will lose Apple as a customer
Apple hired a bunch of GPU engineers several years ago, and speculation was that they were going to design their own GPU instead of using a modified PowerVR core like today, similar to how they have designed their own ARM core, instead of using a modified ARM core like they did with the A5 and A6.
Maybe they finally have their own GPU design ready and told Imagination last fall that they would not be licensing PowerVR for the iPhone 7 and beyond. If that happened, Imagination would know a decrease in their licensing revenue is coming and they'd have to cut expenses.
Biting the hand that feeds IT
