All complex systems contain parasites. In any system of cooperative
behavior, an uncooperative strategy will be effective -- and the system
will tolerate the uncooperatives -- as long as they're not too numerous
or too effective. Thus, as a species evolves cooperative behavior, it
also evolves a dishonest minority that takes advantage of the honest
majority. If individuals within a species have the ability to switch
strategies, the dishonest minority will never be reduced to zero. As a
result, the species simultaneously evolves two things: 1) security
systems to protect itself from this dishonest minority, and 2) deception
systems to successfully be parasitic.
That would be a pretty good description of IP. IP is in economic terms non-rival and non-excludable. It turns out that a free market does not work for goods that are non-rival and non-excludable (by "work" I mean reach a theoretical optimal allocation of resources to production). We developed a cooperative behavior in order to make it so a free market would work for such goods--basically by PRETENDING that IP is rival and excludable.Some chose not to cooperate, and ignore that. As long as they are not too numerous, the system as a whole does not break down. The majority pretends that IP is rival and excludable, so pay creators for their creations, and creators get paid roughly in proportion to the demand for their works, and thus creators tend to create the works that the consumers want.
DRM has been developed to attempt to limit the effects of the uncooperative, and the uncooperative have developed systems to try to make it harder to detect piracy.