You mean in a timely manner, right? Because the crazy thing is that they did follow through on FaceTime. It just took them nearly a decade. Seeing all of this now, one might wonder if there were certain legal motivations for that.
I don’t think it had anything to do with their earlier promise (and I’m also not convinced patent issues were the real crux of the matter ten years ago).
Not really; Apple simply doesn't move that fast. You can certainly see projects get more resources as a result of trends, but that isn't necessarily going to move the release forward a year.