Remember that it hasn't disappeared just because of people who want to use it.
As in '08/'09, much of it was bought by people simply wanting to make a profit.
In July '09, a single seller in Keene, NH listed 45,000 rds. of Russian 7.62x39 on Gunbroker, all at the same time....
I counted approx. that amount. He must have realized that the panic was cooling off too fast, and I hope that he got burned.