Pilgrim's Pride raises chickens from egg to slaughter weight, mills their feed, and processes them in its own plants across the US, Mexico, and the UK — and because a live bird that reaches slaughter weight must be killed within hours, every farm, feed mill, and trucking route is arranged tightly around the fixed daily capacity of each processing plant. That geography is effectively permanent: the farms surrounding each plant require specific zoning, water access, and distance from housing, so a competitor cannot simply write contracts to build a rival network in the same area, because the viable land is already taken. Running more birds through the same plant spreads the fixed costs — the building, the inspectors, the cold-storage equipment — across a larger output, which is how the business gets more efficient as it grows, but adding a new territory means finding a whole new ring of farms from scratch, which may not be possible. The 2019 acquisition of Tulip added UK pork processing into some of the same facilities, giving Pilgrim's Pride prepared-food capability that a poultry-only rival cannot match, but it also means that a single avian influenza depopulation order or a cross-contamination event in one of those shared UK plants shuts down both proteins at once, leaving the full fixed-cost structure of the plant running against no output at all.