To be fair, a lot of the regulations come from a time when the concern truly was about contaminated animal products, and not about trying to protect an industry

To be fair, a lot of the regulations come from a time when the concern truly was about contaminated animal products, and not about trying to protect an industry. Milk, meat, eggs..etc, all suffered contamination problems as the food industry began to heavily industrialize in the 19th and early 20th centuries.