Wow lucky you guys can even fight over captive vs wild. In some countries imported captive bred are flat out banned making yellow tangs as rare as rocking horse dust. I'd be more then happy with a healthy captive bred if ment getting one as a pet! And probably far cheaper then wild non Hawaiian yellows. as well it ment helping with a sustainable future and if the breeders gave back to the wild reefs.
I'm not sure I would say lucky. Regulations and laws in your part of the world, assuming Australia, are for a reason. While they may seem bad, and maybe they are or are frustrating, you have resources you can pull from and still make an amazing display. Just a limited selection on both.
Not saying everything is rosy or makes sense (laws and regulation) or that they even got them right but you don't want something like what is happening in Florida with lion fish or pythons. Always difficult to say which started the chain of events be it ignorant hobbyist releasing into the while or an act of Mother Nature and storms.