Just just a GPL-esque idea I've been musing lately [0], I'd appreciate any feedback from actual IP lawyers. The idea is to add a poison-pill, and if a company "steals" your content for their own profit, you can strike back by making it very hard for them to actually monetize the results. Since it's a kind of contract, it doesn't rely on how much work seems to be surfacing in a particular output.
So supposing ArtTheft Inc. snarfs up Jane Doe's paintings from her blog, she--or any similar victim--can declare that they grant the world an almost-public license to anything ArtTheft Inc. has made based on that model. If this happens ArtTheft Inc. could still make some money selling physical prints, but anyone else could undercut them with free or cheaper copies.