I think OP's point is that since no heads will roll for this, despite it being known that this would happen sooner or later, it will keep happening in other local areas.

If Northern Southern were to feel this incident in their pocket book, they might stop lobbying to gut safety regulations... However, it's very clear that neither legislative, judicial, executive or media positions give a flying fuck to stop this; in fact, they'll go to extreme lengths such as breaking strikes and media coordination to keep the status quo.

So it will happen again, and again, until one day it actually does fuck up a major city - and even then, the people responsible will probably be insulated from consequences.