So a search engine walks into court… and just like that, Google might not be able to search for a solution to its current woes. Google is in an antitrust trial, and it is looking like U. S. v. Google is going to be quite the digital debacle. The stakes are high.

Google's expert argues that US regulators are underestimating the competition Google faces in online advertising, highlighting the rise of social media and mobile ad spending.

Lawyers for the government have revealed damning Google correspondence and called witnesses who describe anti-competitive practices. Google, however, says ‘there is no monopoly power.’

As the government wraps up its case, it has built a picture of how Google has become dominant among companies that buy and sell ads online.