I'm concerned about this topic too. Piracy and copyright infringement is unavoidable with anarcho-capitalism systems.
In the meantime, information cosnumers have the ultimate responsibility to reward original content and punish copyright infringement behaviours.
RE: Sharing Copyrighted Video Material on DTube Could Put Steemit's Future At Risk and Devalue STEEM.. My Thoughts - Having Worked In This Arena For a Decade.