Education and enterprise still have a need for a lot of group-managed laptops. Not all of them will be power users, either. Some of them won’t even have sophisticated IT departments (thinking about elementary schools and the like where their IT needs might not run very high).

I agree that we’re probably seeing the waning days of the casual laptop user who administers their own system as an independent device. Everyone will either be further up the enthusiast/power user ladder or will have switched to phones and tablets.