News sites should be grateful for aggregators
I must read hundreds of different news sources thanks to Google News and similar. Hundreds if not thousands of page & ad impressions per year that these folks absolutely would not have gotten from me otherwise. The same for countless millions of other people.
So what if Google takes it's share? The reality is that news sites are gaining far more hits with aggregators than they ever would without.
If Murdoch pulled his sites from Google, do you know how much people would care? Not one jot. Their content will just fall into a black hole and links that would have gone to news corp will go somewhere else instead.