A favorite example is that us legislation to ban advertisements for smoking was sponsored by the tobacco industry. They were spending a lot on ads just to keep up with the Joneses; if Camel voluntarily stopped and Marlboro continued, then Camel would go the way of Lucky Strike. They would rather agree to cut their expenditures! But they needed to make sure no other young tobacco whippersnappers came in and started showing a couple ads which they would have to both best, reigniting the war.
Open source is interesting because it seems to be a marvelous unexpected outcome from the existence of the corporation. Individual people start to work at corporations and are aware that whatever they produce at that corporation is mortal, it will die with that corporation if that corporation decides to stop maintaining it or if that corporation itself folds. The individual wants his or her labor to survive longer, to become immortal. This company could go out of business and I will still have these tools at my next job. So in some sense layered self-interests create a push towards corporate cooperation.
-David Sloan & E. O. Wilson