Windows growth going to Negative for the First Time, Reason? - iPad!

 This is the most interesting piece of stats Ive come across Internet in a while. Apparently the Operating systems Giants - Windows is facing a setback for the first time! And its not Mac OS, or Linux that's affecting them, its the iPad! This certainly shows the trend of the future going Mobile, and also concludes many possible future Tech Generations. The iPad is powerful, but can it provide the huge junk of Functionalities provided by Microsoft Windows? Or can it ever replace a PC? Share your thoughts below!