They're simply targetting the most consumers they can.
By failing to offer an Apple-branded external battery?
With their industrial designers, they could have come up with something really sexy.
But they still fail to offer a docking station. If they did, I would have pushed really hard for my office to standardize on Apple laptops, but without a docking station, I simply can't do it. And I'm far from the only IT guy with that opinion.
While I'm complaining, they really should have put a MagSafe port on both sides of the laptops.