It doesn't hurt that Apple has some financial incentives for keeping older devices working, as it means those devices are still able to purchase apps from the A

It doesn't hurt that Apple has some financial incentives for keeping older devices working, as it means those devices are still able to purchase apps from the App Store, sign up for new Apple subscription services, and use new Apple accessories. Since Samsung is only a hardware manufacturer, they don't see the benefits of up-to-date devices to the same degree that Apple does. That isn't to say that keeping old devices running is pure selfish self-interest on Apple's part, though. This isn't a zero-sum game; everyone wins when hardware gets a long support life cycle.