"I Can't Afford to Sue DC": Fables Creator Releases Hit Comic Series into Public Domain (Including Wolf Among Us)
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"I Can Give It Away to Whoever I Want": Fables Creator Declares Hit Comic Series Public Domain, But DC Disagrees
https://screenrant.com/fables-public-domain-willingham-statement-wolf-among-us
It belongs to you!
Summarizing his statement wouldn't do it justice so I recommend you read it in full, he explains why he does it and what has DC done to anger him to this extent - but it's also a move about more than just to spite DC.
original source (Willingham's blog): https://billwillingham.substack.com/p/willingham-sends-fables-into-the