Correct me if I'm wrong, but I don't think you require financial damages to sue for a violation of the license. Standing is conferred from having your (artificial legal) monopoly on the work as the author violated, not necessarily financially.

This is the whole principle that allows the GPL to work.

That aside, we should really stop misusing "steal". Not only is it legally inaccurate (Dowling versus United States), it's semantically inaccurate as well. The conflation of that with mere copyright infringement is a campaign driven by bad faith actors.