How is this even remotely anti-trust compliant?

http://money.cnn.com/2011/06/15/technology/apple_kindle/index.htm?iid=Popular

 

“In less than three weeks, Apple plans to begin enforcing new iTunes App Store rules prohibiting apps that include "external mechanisms for purchases ... such as a 'buy' button that goes to a web site to purchase a digital book… Its goal is to steer more of the revenue stream for content purchases through Apple's own in-app payment system, which typically nets Apple a 30% cut of the sales.”

Now read this: http://en.wikipedia.org/wiki/Sherman_Antitrust_Act#Provisions

 

Regardless of legal interpretation… by intent, this type of behavior should not be condoned under Antitrust…