Except that ads are not a core aspect of anything. Businesses don't need (many) ads if they can get targetted access to customers through other means (ie Facebo

Except that ads are not a core aspect of anything. Businesses don't need (many) ads if they can get targetted access to customers through other means (ie Facebook, Groupon). Applications don't need ads if they can get funding from other means (ie micropayments, app store dollars), and customers don't need ads, especially if they can become aware of interesting products in other ways (forums for the like-minded, such as reddit). Ads in the way that Google is selling them may be a declining market to dominate.