The issue is that the regulations initially cut into the profits for meat packing companies. Then over time they serve as a barrier to entry, essentially creating artificial monopolies and anti-competitive market stagnation. It's unintended consequences all the way down, with fair competition, sustainable agriculture / food production, and food safety concerns all being different goals, which are sometimes at odds. Admitted the costs and trade offs is the first step to making real hard decisions, and we're just nowhere close to being there as a culture.