We ended up with food safety laws because people did things like knowingly sell unsafe adulterated milk, causing thousands of infants to die (https://en.wikipedia.org/wiki/Swill_milk_scandal). If you do that these days, you will simply go to jail.
Or get executed, as happened with China's 2008 milk adulteration scandal.
Or get executed, as happened with China's 2008 milk adulteration scandal.