I found this resource, which shows, as of June 2009, which food processing companies own our organic packaged food. I find it very disheartening, and frustrating, and just... beyond worrisome... that so few companies are responsible for all of our packaged food.
For example, you go to the store, and you stand in the cereal section, looking at the "variety" before you. You'd like to make a choice. You'd like to vote with your purchase, for a company whose practices, product, and price agree with you. But whether you "chose" Kellogg's Cornflakes, Kashi Go Lean, or BearNaked Granola, you've put money in the same company's hands. Because Kellogg owns "Kellogg's [fill in the blank]," Kashi, BearNaked, and many other "brands." Kashi and BearNaked are really Kellogg in disguise.
The same few companies own most of our beauty products, packaged food, toiletries, cleaning supplies, even our fresh produce! "Brands" are created to make you think you're getting a choice.
I thought that monopolies weren't allowed in the United States. This is obviously no longer the case, as the largest few companies continue to buy up all our "choices." So they own everything, and they would like to own you.