"Centralized systems are inevitably hijacked by vested interests in a way that is simply not possible in highly decentralized systems. Powerful vested interests rig centralized systems to protect and extend their privileges and profits. This dynamic is a positive (self-reinforcing) feedback loop: the greater the centralization, the greater the influence of vested interests, who increase the centralization that benefits them.
Though it is poorly understood by conventional economists and political scientists, centralization makes it inevitable that the interests that benefit most from centralization (corporations) will serve their self-interests by gaining control of centralized power via lobbying and political contributions.
Once entrenched interests have purchased influence over politicians and regulatory agencies, they use the power of centralized government to limit competition by erecting regulatory barriers. The regulatory system is soon approving whatever reaps the most profit for the big corporations and restricting alternatives to corporate products.
Before centralized federal and state government agencies and big corporations became dominant, decentralized family-owned farms and grocery stores were the norm. Anyone seeking to control the entire sector faced an essentially impossible task.
Now, a handful of corporations control key sectors of the food/healthcare complex: seeds, chemical fertilizers, processing of food into consumer products, distribution to consumers via grocery chains and the fast-food industry, and the healthcare/pharmaceutical sectors."