Apple is estimated to have sold 10.6 million of its Apple Watch in 2015. That's a lot of wearables. But, the device is nowhere near ubiquitous compared with the iPhone, the iPad or even the Mac. I don't know many people who own and wear the Apple Watch everyday.
Recently, Apple dropped the price for its Sport models by $50. That's a good start in finding a fiscal sweet spot for the device. But, I think Apple can do more.