[noneeeed]

People really underestimate how small the slack is/was in parts of the supply chain.

I remember a couple of years ago when we had a lot of snow (for England) and it kiboshed the supply of things like milk and bread for about a week, even once all the roads were clear.

You only need a chunk of people to buy a few more toilet rolls than they usually would "just in case" and suddenly the shelves are empty.