Computerworld posted a story that Microsoft will likely generate revenue from the disappearance of XP according to an analyst with IDC

Although experts expect some business laggards to buy new hardware as they try to replace the 12-year-old XP before it's retired in April 2014, the quantities won't be enough to move the PC shipment needle to the positive side of the meter.

"Replacements for Windows XP won't be enough to offset the declines on the consumer side," said David Daoud, an analyst with IDC.

  Windows XP's looming retirement won't shake PC business out of sales funk