The convergence with power supplies for lower wattage devices is impressive. My iPad charger is 10W and just slightly smaller than this. This thing charges (and powers) an entire laptop).

I expect in a generation or so of iPhone & iPads, all of the devices will share a common charger capability.

iPhones & iPads will probably still come with lower-wattage chargers for cost reasons, but if you have an Apple laptop, it's very likely that you will be able to travel with a single charger for all of your devices.

It's also conceivable that a USB-C device may be able to charge at a lower rate with a smaller charger; charge your laptop with your iPhone charger in an emergency.

"cable sold separately", amazing.

Not necessarily a bad thing. The cable (to the macbook) is often the first part to go. Also, it means that you can just get cables instead of a new brick every time they change the bit that connects to the computer.

I'm not saying it's a bad thing that is available separately, just that one isn't included.

It's a replacement or secondary brick - some people will need to replace the cable too, but everybody got one with the computer.

But it comes in a box with a macbook. This listing is only for a power brick.

Oh, I see. Doesn't a power brick come with the MacBook, too, though..?