This is a valid criticism. The app store provides little, if any, advertising or even ease of discoverability for 99.9% of apps on its app store. Charging 30% o

This is a valid criticism. The app store provides little, if any, advertising or even ease of discoverability for 99.9% of apps on its app store. Charging 30% or any percentage of sales for that matter within apps when Apple provides little marketing value beyond producing the device and a simple catalog of apps is excessive.