I think the shrinkflation phenomenon says a great deal about capitalism, because it gives the lie to the argument that 'we've got to raise prices because our inputs have become more expensive.' With shrinkflation, corporations have to spend significant amounts of money to redesign their packaging, recertify it as safe, and change their production lines and packaging logistics to accommodate the smaller bottles/cartons/boxes. You can't just keep using what you have and fill it only 80% full, as customers won't stand for it; it'd be simpler to just raise prices, but then people might look at your product and decide that their demand is elastic enough to switch to a substitute or give up using it altogether. Shrinking the packaging while keeping the price the same costs money up front, on what is essentially an effort to deceive the consumer.