In this excerpt from Eric Schmidt's interview with CNBC's Maria Bartiromo, the Google CEO explains that a Microsoft-Yahoo merger would "eliminate consumer choice, particularly in electronic mail, instant messaging — things where they would have 80 or 90 percent market share." As an alternative, Google has proposed the idea of serving its ads against Yahoo's search, giving it control over 80 percent of the search advertising market. But that would eliminate advertisers' choice, not consumers'. So it's cool.