I do wonder what the difference would have been had it been open sourced early on? I would think a tool that had a VBScript-like syntax that could deploy to PHP would have been a popular item with enterprise developers for the same reason it appealed to Fog Creek.
I seem to recall some comments at the time that it wasn't worth opening or selling because it was tailored specifically to their code. For example, it relied on their naming conventions to determine whether a string was safe to display or not, so non-Fog Creek code wouldn't really work with it.
