Let them do what they want; the open source community does not suffer fools. It's a dirty practice to build something open source and after a certain point, try to close it off. But, it's not unheard of. Any project can change their license, I believe Google did this with Android. Older versions will get forked and others will do with those forks what they choose. I'm hoping doing this would cause so much backlash th…
The base is open, but what makes it useful is licensed, essentially making the free still crippled. I did a post about Android a while back: