My point is that even without the brand-recognition TV-style ads, Google has six sources of growth which in aggregate refute the idea that "the math's not prett

My point is that even without the brand-recognition TV-style ads, Google has six sources of growth which in aggregate refute the idea that "the math's not pretty on digital advertising's future revenues". And even in brand advertising I'm skeptical of the idea that detailed knowledge of each viewer is not a significant advantage. When Mercedes advertises its brand, wouldn't it be prepared to pay more to target males older than 30 who last purchased a car more than 3 years ago? When McDonald's does brand advertising, shouldn't it prepared to pay more to show the ad to people who are overweight and pay less to show the ad to people who go to the gym 3 times a week and haven't been in a fast food restaurant in 6 months? And if the sales director of a large company has a wedding anniversary coming up, wouldn't a jeweller be willing to out-bid McDonald's for the right to place an ad in front of that sales director?