This guy hits the nail on the head. It's not that there's an ammo shortage, its that people are hoarding it and trying to re-sell it.
The companies are still making it...probably making more per day. The internet fuels the frenzy and now, instead of grabbing a box or 5 when needed, they're grabbing everything and reselling it before you get off of work and over to the gun store.
We are our own worst enemy...