The Nazis had a similar problem towards the end of the war: absolutely everything they produced was adorned with a swastika. They called that phenomenon "Hakenkreutzkitsch" (swastika kitsch)
Just to be correct, because fanbois are easily upset: I'm in no way comparing Apple's marketing to 3rd Reich propaganda, instead I'm trying to show that Jobs made a very good call here: it's a well-known problem, an old one at that. You lose the power of your symbol, its special meaning, and recognizability.
Thats also the reason why ppl find it very very wierd in scandinavia.. why to copy a file, do i press "historic site" + c???
Although I question whether a special symbol is even needed. The key in question already has the word "Command" written on it. Adding the symbol seems redundant and confusing, especially since it is not a universally known symbol. And the drop down menus could easily use an abbreviation, for example, "Cmd+Q" instead of ⌘Q.
Especially when used in combinations, I certainly find it a lot easier to read something like "Cmd+Alt+C" instead of all the little symbols jammed together.
I use the same keyboard, monitor and mouse with my Mac and my Windows machine. To make it easy to switch between them, I have a KVM switch. My keyboard is a Windows keyboard. Until now, I had wondered why my KVM switch maps the Windows key to the Mac's command key. Now I know: The Mac commmand key used to be an apple... the Microsoft logo maps to the Apple logo (historically).
EDIT: according to wikipedia, they removed the apple to make space for the word "command" (or "cmd" in Europe). Makes sense, I guess.