The opposite of food regulations isn't food trucks, it's The Jungle - salmonella and lysine poisoning eveywhwere, people ground up into meat in the factories, products adulterated with all kinds of chemicals, byproducts, filler ...
Because these are chaotic. Once your country goes down the regulation road it's not possible anymore.
- What about the cold chain? - What if people pay with cash and don't pay taxes? - What about noises? - Isn't it dangerous.
Sure your food is safer, but social life slowly erode.