The Federal Trade Commission and the U.S. Department of Justice are considering launching an anti-trust case against Apple following Apple's ban on non-Apple-sanctioned development tools as specified in their new TOS agreement. The case would focus on the new TOS (Terms of service agreement) for iPhone OS4, which dictates which development tools a programmer may use to design and create iPhone and iPad applications. Apple banned any approach that does not solely rely on C, C++ or Objective-C calls to Apple’s APIs.
The ban weeds out competition from Google, Adobe and others. The ban prohibits the employment of Flash, Titanium, Unity3D, Ansca, MonoTouch, RevMobile and more.
Apple says that it's closed system is essential to ensure the quality and proper functionality of it's products.