Why the US government is after Google's search engine monopoly

After more than a year of speculation about how the US would approach a monopoly case against Google, on Tuesday, the Department of Justice went straight for the core of Google’s business: its giant search engine. Prosecutors said Google has acted anti-competitively to preserve its monopoly in both search and search advertising by paying billions of dollars every year to appear on iPhones and web browsers to lock out rivals, and stifling the development of new, alternative search engines.