Tuxman wrote:...it never meant to be Exit Application, right?
Why not? At least when TSR's were all the rage they were claimed as such - if nothing else than as a bravado point from the coder (it was hard work back then, no C#/.NET cheats to create gimmicks with).
Nine times out of ten, the "big red button with an X" is understood by the common man to be the same thing as the locks on chastity belts (without the unpleasant afterthoughts of personal hygiene)

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Methinks TSR was replaced by the word "minimize"... which means Close the Window... as any seasoned backpacker knows, big red X's always imply Exit, Sortie, der Notausgang, what have you.
Granted, it's useful for things like security applications, and hardware controllers, and user-apps that are genuinely needed - but when every little thing in the world comes with a self-aggrandizing smiley icon
that just won't die, and an attitude of inevitability, it makes me feel ill.
(Don't mind me, I just spent a few days "cleaning" the bundled "crapware" from multiple new OEM laptops - I'm a little sensitive to applications "inviting themselves" to dinner without asking. Just needed a rant.

)