Copyright and IP (and probably real estate) are pretty much the only way for capitalists to make money the more things like internet, 3D printing, AI, robotics and so on are available to the masses. To me it's the only way to keep the current power structures intact so for a lot of powerful people copyright laws are probably the most important laws. They don't need the state for personal protection (they can pay for security guards instead of police) but they need the state for protecting their livelihood.