> Nothing prevents the Samba team from joining together collectively and suing someone for violating their license. It's a lot more work and can be more tricky

> Nothing prevents the Samba team from joining together collectively and suing someone for violating their license. It's a lot more work and can be more tricky when there are many different copyright holders. For example, the GPL case against VMWare has hinged on proving that Christoph Hellwig in fact owns the copyright to the lines in ESXi that ended up in VMWare's codebase. He tried to provide git blame output, as I recall, but the court didn't consider this to be sufficient. The case got thrown out, although Hellwig has said he will appeal. If Linux had a single copyright holder, there would be no need for git blame output and Linux could mount a more effective defense.