Your first sentence I would totally disagree with. We wouldn’t know that there’s ‘not a demand for annual upgrades for the Apple Watch’, because it’s never been offered before. What if it was? That probably would change the aspect in terms of consumers how they ration their money. There is a huge demand for the Apple Watch, And an upgrade plan probably would be suitable for those who do consider having the latest model, (As the wearables sector growth has been substantial over the last 18 months from Apple.) The problem is, how does Apple create an upgrade plan for an Apple Watch for an ‘accessory’ to the iPhone. The iPhone is a ‘core product’ that sees mandatory usage on a daily basis, where as the Apple Watch Certainly has the demand, but doesn’t require to be upgraded when it’s still a superfluous tech item, as the iPhone is a crucial piece of technology to every day usage.