The a2 stock shortages have been setup purposely by saying...

The a2 stock shortages have been setup purposely by saying supposed price increase and people buy up thinking it will go up. There were rumours about price increases before.
Daigous buy, and then causes this. Other daigous couldn't get then say, out of stock

In chinese terms - out of stock = must be good because its out of stock.

This is why most times, you'll see Coke bottles half filled in shelves in supermarkets. It gives an impression its selling well.

It's a known strategy.. but like i said.. CEO needs to how to distribute properly.

Its about perception and perception is reality.