Re: One born every minute
Do you not think Apple would like to sell as many as they can as soon as possible? Seems like that is the best way forward for a business.
If Apple waited until they had enough stock to fill the initial demand, they would either be stockpiling 'new ipads' for months before launch (pushing back launch), or they would have to pay much more to Foxconn to manufacture more in a shorter space of time.
Either way it is a balance between having an inefficient or an insufficient capacity to produce.
Normally it takes desirable Apple devices a good couple of months after a product starts shipping to become 'fully available' in the app store. If you assume that they have been running production of the 'new ipad' for 2 months prior to launch, then in order to meet demand at launch they would have needed either to delay the launch for 2 months, or to have had double the production capacity prior to launch.
So there are good technical reasons why a highly desired device will always be difficult to lay your hands on at launch. It's not necessarily an Apple thing - look at the RasberryPI - although I'm sure they do love the hype.