Google has spent a decade sharpening its “weapons” in an industry that helps sustain large swaths of the open internet, the Justice Department argued before a federal judge Monday. After years of operating an illegal monopoly in two ad tech markets and unlawfully tying its products together, nothing short of a break up will suffice to overcome Google’s “massive head start” over rivals, it claims.
DOJ attorney Julia Tarver Wood began her opening arguments in the remedies trial for…