They are already somewhat smaller — due to product shrinkage.
Mfgrs shrink the sizes of products and package them in the same wrappers to make consumers think they are getting the same sized product as previously. Of course, the prices on the shrinkage items are about the same as before the shrinkage.
Shrinkage is so bad in some stores that they had to get new shopping carts with lesser distances between the slats. Too many ‘shrinkaged’ products kept slipping through the wider slats of the old carts and ending up on the floors.
I wish more people would vote more wisely with their dollars, that is, when Im considering which product to buy and both are of equal quality and relative price per ounce then I look at the amount in the package as sold. If the package is using some bizarre unit of sale, 13.5 ounces instead of 1b or whatever, then I don’t buy that product as it is clear to me that that company is trying to cheat me. When I recognize that a company is trying to improve margins through deceit, I remember and don’t buy any of their products if possible.