And for that matter, this sounds like a pretty strong disincentive for developers to make their code open-source at all. I'd rather just release proprietary software under a license that allows me to revoke individual entities' ability to distribute my work on a whim to prevent something like this from happening. And I mentioned Tuomo above for a reason--his experiences with ion3 and dealing with the open-source community drove him to a similar decision, and he quit writing open-source software and developing for Linux as a result. By the time he quit, he had become an active opponent of free software.