It's probably those same people who publish their code under open source licenses instead of giving it to the public domain. I don't understand why people cling so hard onto every worthless little bit of code they write while also sort of half giving it away to almost everyone for almost any purpose.
First of all, don't pretend that copyright depends on how much "worth" a copyrighted piece of work has. Not just the works of Prince and the Beatles deserve copyright.
Then, a lot of open source authors understand that their works are not groundbraking inventions and want to share them with the world without any fees or costs. And others have groundbraking inventions and still share them for free with the world.
But there are almost always license terms attached to the piece of the work. They can be essentially non-limiting, like public domain or MIT. But they can also enforce some minimal requirements like attribution. Why should any entity, especially huge corporations, not be bound to those conditions? It was mostly those corporations which created a restrictive copyright. Try to draw an image of Micky Mouse and put it on your website and see what happens.
