Hi,
When I took economics, this concept described General Mills' ownership of wheat farming up the supply chain to include Wheaties.
Grub Street (link) applies the concept to the sale of Pabst Blue Ribbon by the company that owns vlasic pickles.
"The food investor, who also bought Vlasic, now controls the entire hipster diet: pickles and PBR." I better go back for a refresher course...or save some money and adjust my dietary choices.
Tim