The local farmer can't supply eggs in the quantities Aldi needs, so Aldi prefers a simple supply chain with a couple of contracts with large-scale producers. Same as the other national/regional chains. Government stopped enforcing anti-monopoly laws, all the retailers consolidated to drive out the independents; the six remaining grocery chains forced all their suppliers to consolidate to national-scale production; the food packagers prefer to deal with factory-scale farms... We could really use a little competition in our 'free' markets.