But that wasn't the cause of the problem: the cause of the problem was people thinking "oh I'm not sure about a shortage, better buy an extra pack" (I know we did) for just one week...and then someone posts an "empty store shelves!!!" image on social media...which in turn prompts another group of people to do the same at another store, and then the idiot-brigade scalpers get involved. There's still no actual shortage though! The amount of toilet paper being produced is the same, the consumption rate is the same, people have just changed their stockpiling preference and the rate at which they do is spreading faster then any conceivable supply chain adjustment. But the actual consumption rate hasn't changed at all.

The idiot-brigade scalpers are worth commenting on because IMO there's a second factor which usually turns up: it's kind of fun to "buy out the supermarket" of some good. Like there's a child-like glee of going "I'll totally buy all of it" but most people don't consider that you can do this for any one item in the supermarket for like, $300 on the spot. It's just there's no reason too - partly because it's the most expensive possible way to buy almost anything.