I don't understand the outrage here. The App Store is private property. The owner of that property (Apple) has the right to use that property as they see fit. Developers are also free to agree to the terms of the App Store or not. The purchasers of Apple products are also free to buy things from the App Store if they choose to.
How is this unfair, evil, or wrong I don't understand. Unfashionable, yes. Wrong or unfair, no.