Because windows 8 is everywhere!!!!
Everywhere laptops, Surface Pros, Lenovo Yoga, HTC phone, Nokia phones, Motorola phones and portables.....Anything that is window base and portable!!!!
60 million copies sold in 10 weeks, now they must have 80 millions sold! especially when the promotional period pricing ends in on Feb 1st. Earnings tommorow is a BLOWOUT! or they can hoard all the W8 and monopolize the hybrid portable computing business (hence the buyout of Dell's laptop or portable division).