Explain what you mean when you say that Google makes money by aggregating other people's content? Google makes money by indexing other people's content and driving traffic to other people's sites. That hardly seems like a bad thing.
http://books.google.com is considered one of the more egregious examples, with many authors and publicists having complained about Google taking samples of the content and posting it online. I did a Google search a while back on a graphics issue, and got the answer I needed from a Google book search result. You could argue (as Google does) that they are really just helping promote the book. But I have no need too buy - I got the answer for free.
Would you have bought that book just to get that one answer? Would you have known the book even had the information you needed without Google's help?
Google News is an aggregator, hence Rupert Murdoch's problem with it.
Google doesn't make any money off of Google News.
Maybe not directly, but I am quite sure that Google uses Google News to enhance search results (they know more about you and your interest), and so indirectly makes money.