Winning the copyleft fight

> There's a smaaaaal issue here - GCC decided to switch to GPLv3.

As if that had any practical importance for Apple. It might have accelerated the process, but Apple showed contempt for GPL before the v3 issue came up (recall the khtml fork that is now webkit). It was probably only a matter of time.

> Proprietary code usually has one copyright owner.

Really? Larger proprietary projects I have been involved in all have had multiple copyright holders. In fact, that has caused much of the problems related to opening up graphics drivers.

> Sure. Because there's just one Linux Desktop, as everybody knows.

There are three, none of them forks. Your point being?