While you're irrationally hating, you should know FaceTime was originally planned to be cross platform. The need to completely change how it worked obviously stopped that from happening.
Apple did initially claim Facetime would be an open standard.
> Upon the launch of the iPhone 4, Jobs stated that Apple would immediately start working with standards bodies to make the FaceTime protocol an "open industry standard".
claims Wikipedia. Other websites also highlight the "open standard" it was supposed to become:
