Well, it's amazing then that Amazon's Kindle return policy has not hurt the Kindle store... You have more than enough time to read a book the size of the bible and can still get a full refund for it.
The fact simply is that Apple's "no refunds" policy is extraordinarily customer hostile and that every country should have laws that protect the consumers in a similar way as Taiwan obviously does it.
Or maybe the book buying crowd has a different ethical viewpoint than the video game buying crowd.