Not sure I agree here: a) A developers biggest problem is his competitors. As the culling is a specific category of apps, it's unlikely to remove his competit

Not sure I agree here: a) A developers biggest problem is his competitors. As the culling is a specific category of apps, it's unlikely to remove his competitors from the mix. b) It adds uncertainty into the business model. You can spend time and building an awesome and popular app and there's no guarantee that Apple won't decide they're culling your specific class of app next. c) The app store already has so many apps that simply culling a category doesn't bump the numerical odds up that much for an individual developer