Companies give people what they say they want.  Snackwells hit the market because people wanted to be able to keep eating cookies, but they wanted them to be healthier and still taste good, so Snackwells hit the market as "low fat" or "fat free" with extra salt and sugar to make up for it.  That marketing helps large corporations that can invest in developing and marketing those "miracle foods" that exploit a market opportunity, and reduces the number of people cooking/baking their own treats, where they know exactly what they're putting in their own bodies.  No one held those people down and forced them to eat Snackwells by the sleeve, but corporations definitely benefit from marketing "being fat can be healthy" and "our low fat/sugar/sodium product is now available".  Individuals should want to be healthy, but corporations don't care about individuals.  (And I assure you that the vast majority of people leading those corporations are smart and driven enough that they and their families are healthy and avoiding the garbage they sell.