Petra Moser explains that copyright protection for 19th century Italian operas led to more and better operas being written, but the evidence also suggests that intellectual property rights may do more harm than good  if they are too broad or too long-term. From The Economy, published free online by The CORE Project (<a rel="nofollow" class="external free" href="http://core-econ.org">http://core-econ.org</a>).
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