Easiest? Perhaps. Nothing around law is particularly easy (except breaking it, of course!) :) So, not altering existing laws, or not making new ones, would absolutely be the easiest method to that desired outcome. Many things would be easier to do if they were simply done how they were described, in a manner in which they were excepted, under the terms which they were agreed to. However, can we expect that a lack of laws/codes/statutes could ever result in effective or consistent behavior? Sadly, no. At least, not based upon historical experience. Perhaps the disposition of man will change one day - who knows what the future holds, but God!
Negligence is a thing that is bred in indifference and grown through a lack of consequence. Law and reform is the sole remedy.
Consider this: It would be far, far safer and more profitable for owners, employees, and customers of restaurants if the restaurant kept their cooking areas clean and tidy. Yet, even with unannounced and routine health inspections, various licensing requirements, annual training & education certifications, and massive fines...in spite of all of that, absurdly high numbers owners can't meet the bare minimum. People still somehow die from unsanitary food every year!
The best we can do then to combat the disposition of disconnected employees, and the blasé, checked-out business owners is to crush their skull. It is a judicial vengeance, a constant protector for all the people who had been abused unfairly; the ones who were discounted as "unimportant nobodies". Law is what gives the common man a temporary illusion of equal treatment. And when that illusion is chipped and broken from time-to-time, well, at least we can put another head up on the spike outside our walls.
It's certainly not quick, or easy, or even preventative(!), but it is the kind of response that is owed to the victims of incompetence and indolence.