The reason starchy and hydrogenated foods dominate is agricultural subsidies, not so much natural economies. If you killed corn and soy subsidies a whole lot of junk food would disappear. Fritos are only cheaper than sauerkraut because you paid part of the frito bill when you filed taxes. Healthy fresh vegetables are most definitely mass produced.
Running with the metaphor any way, government has a major role in perpetuating huge corporations and preventing the emergence of smaller ones. SarbOx is an obvious example. OSHA makes it very hard for a small group of guys to set up a manufacturing shop, even if they know how to make it safe. Read this guy on how it's basically illegal for him to run a small, traditional farm: http://www.mindfully.org/Farm/2003/Everything-Is-Illegal1esp...