That is in the states Smiley. It has nothing to do with the carriers or Apple Canada here.
"AT&T, Verizon and Sprint all sold out of iPhone 4S pre-orders, signaling a possible inability to meet consumer demand"
smiley you are wrong. Apple never said official that they do not have anymore phones..
The article just says that with no proof. Also Canada has a different Apple warehouse that they get phones from. US has a different one as well..
Apple has different inventories for different countries, iphone 4s being out of stock in the US has nothing to do with us Canadians.