News Corp considered switching away from Google’s advertising products in 2017 – but decided against it after determining it would cost the company at least $9 million in lost revenue, a former executive at The Post’s publisher testified Tuesday.Google maintained a stranglehold on digital advertising despite offering tools that were “clunky and slow” and ignoring requests to add new features, said Stephanie Layser, who worked as an advertising technology executive at News Corp from 2017 to 2022.Despite the ...