Long may it run: Windows XP will eventually go open source
That is our prediction. Microsoft will have little reason to keep the code proprietary after the shift to the new Vista/Windows 7 hybrid gains traction and quite a few reasons to keep the OS in use on the many devices with XP installed. If it is to happen, this shift to open source will take place by 2012.
Certainly not likely to abandon a revenue stream, MSFT will offer paid support as is available for Linux.