I'm just pointing out product velocity slowed. I'm far from the first person to say it, it's just a fact. In the five years before Cook we got first generation Apple TV, iPhone, iPad, and MacBook Air. Your list spans 14 years.
The reality is everyone just wants another hit product like the iPhone, but its success was based on it being a personal convergence device. You can't really create a second carryable/wearable convergence device and expect it to be wildly successful at the level of the iPhone without it killing off the iPhone.
So far that revolutionary approach by third parties has not succeeded against the iPhone, and the evolutionary approach apple takes with the iPhone means there is no clear inflection point anywhere in the future where the phone form factor goes away.