Business Insider has initiated a lawsuit against Google, alleging the tech giant engages in monopolistic practices within the digital advertising sector. The 89-page complaint highlights Google's control over publisher ad serving, specifically through its integration of DoubleClick for Publishers (DFP) with AdX, which allegedly suppresses competition and restricts revenue opportunities for publishers. The lawsuit claims that millions of advertisers depend on Google Ads, binding publishers to AdX as their sole channel. This legal action mirrors a similar case by PubMatic, spotlighting significant concerns over ad market transparency and competition.