The only way this would even remotely be likely is if the S really HTF, and even then, much more humble, useful subsistence items would be far more desirable.
That's not to say that those who have held gold for, say, the past ten years haven't profited handsomely. But this sort of thing has been a pretty reliable indication of a top in the past.
A better, more accurate word would seem to asymptotic.
A parabola can be somewhat flat.