[swatcoder]

I use my desktop and perform searches every day. I am constantly nagged with targeted ads and bulk promotions when doing so on Windows and when using Google.

I search for apps in the App Store once every few months. Perhaps others do it once or twice a week if they like exploring and trying new apps.

Does that not seem qualitatively different to you? Even if Apple makes some revenue as a result of advertising inside their fully segregated marketplaces, it's hard to think that those ads are a big part of one's experience with Apple.