On the one side you want to applaud the success of the Mexican government, but on the other side of the story, you see they know who and where most of the players are, yet they only take down a few of them. Most Mexican's will tell you it is a matter of who is paying who at the time. It can change in an instant, but it still is the government or one part of the government picking sides on which Cartel they will back. In fairness even if a law enforcement officer or a politician wants to be straight, a simple kidnapping or even threat of a kidnapping of a family member will get them to change their mind, once in play, then money usually keeps them there. This can be seen in many places in the Mid East, North Africa, South and Central America, but also in neighborhoods in LA, Chicago, New York City, even in Washington DC.