The matter would be greatly simplified if the copyright law, and patent law (but not trademarks) was abandoned altogether.
People who aren't entrenched in their beliefs in copyright can find lots of good arguments for economic losses caused by those laws, and lack of proof there's anything to be gained from them, sumarized by much better minds than me in "Against Intellectual Monopoly" book ( available here:
http://levine.sscnet.ucla.edu/genera...ainstfinal.htm , and also at Amazon, should you wish to pay homage to the copyright's golden calf ).