What concept regarding product volume reduction is the steadfast weight of the US Milky Way resisting?

Answer

Shrinkflation

In contemporary consumer goods markets, many products are subject to shrinkflation, a phenomenon where the physical volume or weight of the product is reduced while the price point remains constant or increases. The Milky Way bar, maintaining its fixed 1.84-ounce weight across various retailers despite potential ingredient cost fluctuations, is specifically noted for demonstrating a steadfast commitment against this widespread trend of product downsizing in packaged goods.

What concept regarding product volume reduction is the steadfast weight of the US Milky Way resisting?
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