Scenario! As the name implies copyleft is an inversion of copyright. Where as copyright and intellectual property laws, restrict what you can share, copyleft lifts all these restrictions. Under copyleft, the only thing you CAN'T do, is sell someone's else's work that was shared with you for free, and falsely claim credit for other people's work. Implications of this are that file-sharing, burning CDs etc, would now be fully legal. Selling bootleg DVDs would still be illegal.
Should we switch to this system? Discuss.