Why Wasn't This Done?

Every time we learn about a scandal it feels like, well, why wasn't this done? Whether it's pen state or the michigan state trainer. There's all these things that have to break for you to come to a conclusion of having people held accountable. And i think whenever i see the reaction o one of these stories, wlike,Why wasn't something done? What wasn't smething done? The way it always seems to be done.