Led by the Australian Competition and Consumer Commission, the regulation will force Facebook and Google to come to an agreement with news organisations to share royalties for the content even if it is voluntarily placed on the platforms.
Easton claimed that news represented just a "fraction" of what people see in their News Feed and was "not a significant source of revenue for us" and that the benefits the media enjoyed from exposure on social media outweighed loss of advertising revenue.
The Australian government would "do more damage to the very news organisation the government is trying to protect", he said, claiming that it had "ignored important facts, most critically the relationship between the news media and social media and which one benefits most from the other".
Three months
Under the new law, Facebook could be forced to share data such as the ranking of a news story on its feed to work out the revenues generated from news stories. It may have to warn the media in advance of any changes to algorithms that would affect the visibility of stories.
The law will initially just apply to Google and Facebook although could be broadened out to other digital firms in future.
They will have three months to come to an agreement with news organisations over how much to pay.
If Facebook and Google are found to be breaking the law they face fines of up to A$10 million ($10.9m) per breach or 10 per cent of annual local turnover, depending on which is larger.
- Telegraph Group Ltd