Institutional ossification. It happens to giant corporations, but it just happened sooner than we expected. The unlimited resources apparently became the source of unlimited paralysis. The Siri team went to sleep or got lost on some side track, and no one was watching.
Ten steps on the polishing of the jet black iPhone was about 8 steps too many, Jonny, and it characterizes your recent design choices. Should Federighi, Cue, Schiller and (hardware guy) be touting the excruciating detail of minor features rather than significant updates to products under their wings? No. The new ARM chips are excellent, tho.
Even the keynotes have gone from the unexpected and insightful to the clipped, very repetitive and timed-to-the-second ennui. They're all reading well-rehearsed scripts instead of talking to their audience. There's no juice. Part of that is no compelling speakers, the bigger part is not much innovation to be excited about. Your little Ear Pod system is wonderful, but there are crickets sounding over on the Mac side (again, for years). Under the hood refinements are nice but not very filling as a steady diet.
I'm not leaving the tent, but I'm not sure I care anymore.