Since most users do this already, the bug goes undetected for years. Microsoft will take over the Linux operating system. Tired of fretting over Linux's growing acceptance as a server operating system, Redmond mounts a hostile takeover of the Little OS That Could. True, Linux is freeware, but Microsoft cleverly infects each copy with the Office 2000 Registration Virus. Fifty bucks buys you free code.
Freeloaders get a trashed hard drive.
A desperate Microsoft quickly changes the product's name to Windows 2001 and hires HAL 9000 as product pitchman. Sneaky HAL shuts off the oxygen supply to Bill's office and then assumes command. No one suspects foul play until the Gates' second child is named Daisy. The Justice Department breaks up Microsoft. Under Justice Department orders, two new companies are created.