"Hey, why didn't we think to build a touchscreen interface for dragging things around a screen instead of touching buttons and scrollbars?"
"Hey, why didn't we think to build a 10" device for movies and content consumption?"
In the context of all this industry-wide uncertainty, Apple will be the calm port in the storm, even with Steve Jobs retiring. And Apple has yet to lose any of its market leadership, something which is bound to happen eventually with or without Steve Jobs at the helm, but hasn't happened yet.
In this context I say "why didn't everyone realize last week that this would happen?"
Apple continues to surprise us in ways that we should have expected.
But it would compound the lack of foresight to think that Steve Jobs would leave without having vetted and given his direction to the next few innovations in the pipeline. Does anyone truly believe, if you think about it, that Steve Jobs would retire without the next few innovations being designed, ready, integrated in a streamlined way, and having passed the "Steve Jobs test" for usability and design?