Too late
The two major Telco's in Australia, Telstra and Optus, have (quietly) announced that they will introduce the filter "voluntarily" in the middle of next year with no opt-out option.
http://www.theaustralian.com.au/australian-it/telstra-and-optus-to-start-clean-feed-to-block-child-pornography-web-pages/story-e6frgakx-1225903166489
Biting the hand that feeds IT
