You're right in principle, and I thought about writing the same. But trademarks are IP too, and I have a hard time seeing how this applies to them. I also think copyright is far worse than patents for a few reasons. Firstly, patents do expire, whereas copyright never seem to. Secondly, patents disputes are mostly between businesses, which mean the forces are roughly equal on either side. Copyright disputes are sometimes between businesses, but more often than not, they are between businesses that hold the copyright on one side, and consumers on the other. And in those cases, the balance of power is tilted massively in favor of the right’s holders. Which I am guessing goes a long way to explain why the copyright period keeps getting extended.