This Deal Helped Turn Google Into an Ad Powerhouse. Is That a Problem?The $3.1 billion acquisition of DoubleClick in 2007 was a “game changer.” A growing number of antitrust experts say it’s the sort of deal that should no longer be possible.#Google#Internet History#Market Tools·nytimes.com·Sep 22, 2020This Deal Helped Turn Google Into an Ad Powerhouse. Is That a Problem?