Earlier quoted context omitted.
The way it works is: A company adopts some software with a free but not copyleft license. Adopts means they declare "this is good, we will use it". Developers help develop the software (free of charge) and the company says thank you very much for the free labour. Company puts that software into everything it does, and pushes it into the infrastructure of everything it does. Some machines run that software because an…
>> A some point the company says "you know what, we like this software so much that we're going to fork it, but the fork isn't going to be free or open source. It's going to be just ours, and we're not going to share the improvements we made" Right. So at that point all those contributing developers are free to fork, and maintain the fork. You have just as much control as you always did. And of course being MIT or GP…
Yep. And we've seen this happen. Eg, MariaDB forked off from MySQL. Illumos forked from Solaris. Etc. Its not a nice thing to have to do, but its hardly a doomsday situation.