If I write an app for Windows XYZ, my users can continue to run it as long as they keep using Windows XYZ, not as long as Google decides to keep running a service.
I thought Microsoft could kill a Windows app they didn't like these days. Maybe I'm wrong, and your point stands for earlier versions of Windows and Linux.
Really? How can Microsoft/Apple/Linus kill an app for recent versions of Windows/MacOSX/Linux? Perhaps I'm getting a different meaning from "kill" ... do you mean it won't be allowed or that the API's would change so much that it's not worth updating the app?
