Indeed, the comment above isn't quite what I meant. For example, one of the reasons I included Mondelez is that my theory includes the idea that in providing low cost commodity "food", families had other areas of the economy they could spend on (education, entertainment etc).
Societal benefits may be one thing, though I'd say for companies of this size it's only a side-effect of economies of scale, but as far as most of us experience them Mondelez is pretty standard CPG company.
I was way more focused on Kraft than Mondelez - I mentioned Mondelez first because HN seems to want you to word things that way, but really, I was more thinking about Kraft as it's funny little dairy business from the 20s to 30s. :)