https://www.cnet.com/news/news-corp-calls-on-australian-watchdog-to-break-apart-google/

The company argues that Google's ability to retrieve data from Google Search and capitalise on that through ad services establishes "an impenetrable offering for advertisers," making life difficult for competitors such as News Corp. 

The past few years have seen Google and Facebook become something of a duopoly within online advertising. In 2018, for instance, the two earned a combined 60 percent of the US' $100 billion-plus market, says eMarketer. (Google's market share was 38.2 percent, while Facebook's was 21.8 percent.) Popular publications including Vice, BuzzFeed and Vox, by comparison, don't earn a combined 1 percent of that market, according to the Economist.