Most people seem to have a visceral attachment to patents or copyright. Maybe it's more than culture: "When players were confronted with a free-rider, almost everyone put themselves at the upper end of the anger scale. Fehr and Gachter describe these emotions as a “proximate mechanism”. This means that evolution has built into the human mind a hatred of free-riders and cheaters, which activates anger when we confront people acting like this – and it is this anger which prompts altruistic punishment. In this way, the emotion is evolution’s way of getting us to overcome our short-term self-interest and encourage collective social life" http://mindhacks.com/2013/02/18/bbc-column-why-cyclists-enrage-car-drivers/