Yes. In this case, it is the artist's sole right to reproduce said images, based on their creative output.
>> decreases scarcity, it doesn't increase it
What does scarcity have to do with stealing? You can steal bread and reduce food scarcity, but that is still theft.
Copyright is why Disney can ruin someone for doing something with Goofy they don't like. Yes, it protects smaller, less profitable artists too, but make no mistake: it's a tool of mass control and cultural capture.
Perhaps it's time to seriously ask whether copyright is actually doing its job of "promot[ing] the Progress of Science and useful Arts." "...but generally speaking, other nations have thought that these monopolies produce more embarrasment than advantage to society" [Jefferson].