Food companies optimize for palatability and against satiety. Then they brag about it, advertising that you will never eat just 1.
Why do they do this? Because the food market is saturated and getting people to consume more is a good growth strategy.
We can blame the paint industry and the cotton industry for the food industry's mistakes. Paints & stains used to be made from "drying oils" (soybean oil, linseed oil, etc), now they're made from petroleum. Cotton production creates a lot of cotton seed as a waste product.
https://en.wikipedia.org/wiki/Drying_oil
Instead of going quietly into the night, the seed oil industry now sells "vegetable oil" for human consumption. Crisco was made from hydrogenated cottonseed oil until it was reformulated in 2007. IMHO, Crisco is still not appropriate for human consumption.
https://en.wikipedia.org/wiki/Crisco
Charlatanism: it's what's for dinner.