This doesn't pass the sniff tests. There are plenty of other goods with equal or greater concentration that don't see wild swings like this, cars and CPUs, for instance.
You can't "manufacture" an egg like you do with a car. Entire egg "production" sites need to be shutdown and millions of chickens killed because of some strain of bird flu for example. And you can't just order 5 million egg laying chickens to substitute the old production with a lead time of a few weeks.
Also, many of the "independent" farms in reality run with a single-"customer" contracts and the margins squeezed to the max in a way they even need to borrow huge amounts of money just to stay afloat and don't breach their contracts with huge conglomerates like Tyson. In practical terms the supply side for the quarters is decided by a couple managers who work for these big food companies which have their own "tough" contracts with retailers like Walmart, Target, etc. So if the manager happens to be a dipshit or making a bad move the consequences of that are national. And I'm not even talking about shoving MILLIONS of animals packed in a couple acres. If one coughs..
I mean, my CPU had definitely run a virus or two but nothing causing long term damage.