Expectations can lead to disappointment. That's why I avoid them as much as possible. I like the Apple Watch very much, but people it seems were expecting something magical. The hardest smacker in the world is reality.
They suffered from what I call Daffy Duck syndrome, 'can only do it once'; that's when you make a product so good that you leave yourself no options to improve it, so you have to find other ways to improve it even if it's something once ridiculed. What are they going to do 2 years from now?