A while back, I did some research into patent trolls, and came across the history of NPE firms that do DPA (defensive patent aggregation), like RPX [0]. What surprised me from a game theoretical perspective was how murky things got. These situations can be tough on entrepreneurs and seem to create space for said entrepreneur to purchase protection in the form of patent aggregation to mitigate against potential devastation caused by this. On one hand, I can see how it can amount to a protection racket. On the other hand, the existence of patents and how they relate to property are pretty complex. This TechCrunch article about RPX does a good job of going into further detail about this, but truth be told, I am even more on the fence after reading this. I agree that patent reform would be necessary to rectify this situation, but in the meantime, I can't think of a better alternative. The cynic inside me can't help but think that business is always it's own kind of war, sadly.

[0] https://en.wikipedia.org/wiki/RPX_Corporation [1] http://techcrunch.com/2008/11/24/is-rpxs-defensive-patent-ag...