I think if someone spends their time and creativity making something they should get to put their creation behind a paywall.
Everybody wants everything for free these days like they are entitled to it... People like to throw the copyright laws around to justify their feeling of entitlement to others' work..i remember the days of the other games when there was an entire campaign against it and websites would pop up with all creators premium content for people to get for free.
If someone spends their time to learn how, and then put together something with their own creative flair then they should get to do what they want with it.
Its art - you wouldn't say: "I should have your sculptures for free because *technically* you didn't *actually* make the clay itself, so therefore whatever you sculpted with it, isn't technically yours and therefore should be free for me to have and enjoy as I like."