[superuser2]

In the absence of copyright, you would be free to do whatever you want want, including modify Free Software and redistribute your modified binary without source code. Every GPL and AGPL license is effectively downgraded to BSD.

In a world where selling software is less relevant than selling network access to software or devices with software on them, this places companies at a huge advantage (since they don't really need copyrights on binaries) but the Free Software community can no longer forcibly extract the source code of derivatives.