Isn't it obvious what happened to iPhone 7 Plus supplies?

Apple made the startling admission on Thursday that they had no more iPhone 7 Plus smartphones to sell to all those people who patiently waited outside Apple stores around the world. The news was met with shock and dismay. How could this happen? Is the 5.5-inch smartphone that popular? Did that many people want that pretty, pretty cool, integrated 2x-optical zoom camera? SEE ALSO: iPhone 7 and iPhone 7 Plus: the review Maybe. Perhaps, though, there's another explanation. After all, not everyone