I can see where Google is losing money with business services that don't have an advertising base. Many, if not most, of Google's business units lose money is misleading because they exist either to support the advertising base or to gain market share for future advertising platforms. (Android is the perfect example.) Saying Google's business units lose money and only the advertising unit is profitable profitable is like saying a TV network loses money because only the advertising unit is profitable. You can't have advertising revenue without the other units.