Google says a closed ad ecosystem isn’t anticompetitive — it’s just safer

Google took a page out of a familiar playbook in court this week, defending itself from claims of anticompetitive conduct by raising security concerns. While the government argues it locked up the ad tech market to make more money, Google’s witnesses say that a more closed ecosystem is often safer for users — echoing a defense both it and Apple have made of their mobile app stores.

Google’s attorneys have spent the last few days mounting its defense against the Department of Justice. The company argues that conduct the Department of Justice paints as anticompetitive — like locking customers into its services and exerting control over the rules of the industry through its dominance — actually has justifiable business purposes. The point…

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