[throwaway2016a]

I'm not sure your conclusion follows from the article. The lack of controls may contribute but the reasoning may have not been greed. There are many market factors in play. It may very well be greed but I don't see much evidence in this article either way.

In other words, the article explains why the price growth was not capped. It does not explain why it grew in the first place.

In general I wish the drug company had taken time to contribute to this article and show their side of the story.