And that just shows how pointless copyright law is in this particular example. It's analogous to someone inventing a device that causes food to rain from the sky across a large area, then passing laws which state that no one can eat the food that rains onto their property (without permission of that inventor).

I'm all for trade secrets (which really already exist as consequences of employee contracts and trespassing laws), but prohibiting anyone from using code that you deliberately share with the world seems so backwards to me.