The US Department of Justice is likely building up for even bigger action - targeting Google’s ad tech business, says Bloomberg Opinion’s Parmy Olson. LONDON: News broke this week that the United States Department of Justice (DOJ) wants to force Alphabet’s Google to sell Chrome , its dominant web browser. That has led to much head scratching in the tech industry. Sure, Chrome is an important moat for Google’s business, but is it really the source of the company’s power? And if a company buys