You're confusing actions and goals. If we pass legislation banning unsafe environments, all we're saying is "Dangerous work should only be done by criminals." If you think coal mines and slaughterhouses are bad now, just imagine how much worse they'd be if they were run by the mob.[1]
They might even be as dangerous as mines in the kind of country that does try to guarantee workers' safety and happiness through legislation ( http://www.chinadaily.com.cn/english/doc/2004-11/13/content_391242.htm )
[1] We've passed laws that say "Nobody should smoke pot," but the effect of those laws is, essentially, "People should only buy their pot from someone who has little to lose from committing additional crimes, such as someone already involved in illicit traffic and already able to extralegally enforce illegal agreements.