Ask HN: People are panic buying. What to do?

I just got a phone call from my brother that a lot of online services have stopped delivering.

I just went to the supermarket and I see people just stocking up on essential items and empty shelves everywhere.

I am very much against it since it's a very illogical thing to do.

What would the sane way to go about it? Is it really possible that we can run out of things like milk and diapers nowadays?

This is the first time I'm seeing this happen in my life :(