Reading through these insighful responses (many thanks) I am inclined to believe that when the WEI references "abuse" and "fraud" what the authors may be referring to is ad fraud and even possible fraud by Google toward its customers, i.e., advertisers. The generality and lack of any detail to support these "justifications" may be intential. The company probably does not want advertisers to know the full extent of the ad fraud problems. An online advertising empire could be a business (=racket) built on sand but the less advertisers understand, the less likely they will be to distrust Google. If there is competition as "Big Tech" assures us time and again, then perhaps the company stands to lose customers to Apple.