Isn't this mixing things up a bit? This issue relates to their dealings in Australia, whilst any antitrust case is most likely to come from US or EU and be focused on those markets, isn't it?
This legislation is supposed to be a kind of antitrust (ie. competition law) regulation. It came out of an inquiry by the Australian Competition and Consumer Commission. The stated purpose of the law is to remedy a 'bargaining power imbalance between digital platforms and news media businesses': https://parlinfo.aph.gov.au/parlInfo/download/legislation/em...
