Totally sympathetic to the author here, and believe that the counterfeit should be taken down IMMEDIATELY (checking amazon it looks like this is the case)

If the book was digital then I would say preemptive verification should be done. However, for a physical paper book how could you verify legitimacy at scale?

It's a hard problem. I can't think of a way that doesn't involve destroying a physical copy to OCR, and that's a lot of manual effort.

What would you propose? Not trying to be confrontational, legitimately curious!