I can answer this without even reading past your 2nd sentence. Because large entities are dicks. They'll take this public work for their own uses, and then atta

I can answer this without even reading past your 2nd sentence. Because large entities are dicks. They'll take this public work for their own uses, and then attack anyone else using it as if they own the exclusive rights. And if they're large enough, they'll essentially steal whatever the work is from the public by using the law and their stable of bulldog lawyers to go after any other entity using the image they feel they own.