So, in theory, FSF can overnight change the license of all GNU softwares to shareware and sell them?
That's really fucked up. (I trust they won't do such a thing, but I didn't think such a thing could be possible)
That's really fucked up. (I trust they won't do such a thing, but I didn't think such a thing could be possible)
So if they licensed it to you as GPL, and then say "From now on, shareware is the way forward!" then you can continue to share yours as GPL, fork it, etc.
But, I think if they were to go rogue it would be a matter of forking a GPL-licensed version of the software and continuing development on that under an open license.
And all this is ignoring that most GNU programs are licensed under a GPL variant and any future version, so they would not need the copyright to upgrade the license anyway.