Over the last century there was an incredible rise in the number of seed companies, driven primarily by the profitability of hybrid seeds in regional markets.  After the 1980’s, there has been great consolidation in the seed markets, resulting in about a dozen companies selling the vast majority of seeds.  The field is dominated by the “Big Six”, several companies that had broad portfolios, that purchased smaller companies in the last decades’ consolidations. The consolidation continues, as large companies are buying each other, concentrating technology and resources in a few corporate hands.  Prof. Sylvie Bonny from INRA discusses the concerns and impacts of consolidation, as presented in her recent review in Sustainability.