It is truly funny (odd, not humorous) what happens with, and why the supply & demand curve has kinks it has.
Supply & demand w/ required goods looks a wee bit different than Desired goods -- to rip off a right bright advisor for Lady Thatcher: to place something on the realm of desirability is to move to a whole different level.
Securing for oneself what oneself will use, when opportunity presents, is not hoarding, it is intelligent buying.
To buy something that one will never use out of emotion or terror, or view toward future opportunity for gain, are elements of hoarding.
I recently bought items from a hoarder at a good rate -- I am a re-cycler. Otherwise, those items would be wasted.