Actually the official name for the code has been Australian Football for a century or more.
ANZ Stadium wont be able to go running to the AFL for a line of credit - to the tune of $5 million guaranteed by the AFL - when it needs it if it does so.
The deal for finals in Sydney at ANZ Stadium is struck with the AFL and not the Sydney clubs, and the Swans deal isnt up until 2017 apparently.
Its 150 odd years. And when Australian football started there was Cricket. Rugby was known but not professional in Australia, let alone Victoria. Not to mention that League has been played In Victoria since the 1920s.