everybody who wants to shutdown their non-Windows machine now owe Microsoft money.

[acroyear]

United States Patent: 7788474:

A user interface and scheme is provided for facilitating shutting down an operating system. Aspects include the operating system receiving a command to initiate shut down, and automatically terminating graphical user interface (GUI) applications that delay shut down which do not have top level windows. Also, aspects provide a user, through a graphical user interface, the ability to automatically terminate all running applications in response to determining that a running GUI application has a top level window.

Attention PTO: what the hell part of "non-obvious" have you not gotten through your pig-headed skulls?