Laws against shrinkflation are sunlight laws. They're so that when companies change the price of goods (which is fine) the buyer-visible price actually changes.

Laws against shrinkflation are sunlight laws. They're so that when companies change the price of goods (which is fine) the buyer-visible price actually changes. This should actually be great for companies because it levels the playing field. You don't have to worry that your competitor is going to raise prices by shrinking and look better on the shelf next to you and you never have to change your factory to a new smaller size. It's good for consumers because it's hard to measure cost of living increases when your grocery bill number stays the same but actually is just 10% less stuff.