Also, interestingly, Open Source would not work without copyright. That's right. The GPL, (to some extend) the Apache License, and many other licenses only work

Also, interestingly, Open Source would not work without copyright. That's right. The GPL, (to some extend) the Apache License, and many other licenses only work because of copyright, which grants the owner the right to license software to you under a license. Open Source is bigger than copyleft software. Without copyright, BSD/MIT/etc. licensed software would thrive. Also without copyright, closed source software would not generate the kind of money it does now, so there would be less incentive to invest in it vs. investing in open source software. One could say that Open Source gets a competitive advantage when all software can legally be copied for free.