Weren't you around about four years ago when the same thing happened and people were weeping, moaning and gnashing their teeth over the same issues?
The suppliers can't manufacture hoping for panic buying. They have to manufacture based on what they know to be "normal" conditions. When the demand suddenly outpaces the supply it takes a while to ramp up production to meet that demand. You have to look at maybe purchasing new equipment, hiring new people, ordering more raw materials.
BUT...you have to be careful. That demand can suddenly slack off just as quickly as it ramped up. You don't want to be caught with a warehouse full of inventory that you can't move, equipment you don't need, employees you'll have to find work for or lay off. It ain't just throwing a switch.
For God so loved the world, that He gave His only begotten Son, that whoever believes in Him should not perish, but have everlasting life.
John 3:16 (NKJV)