@aks the cool thing about openjdk is that it's actually the reference implementation for the language~
i'm not 100% sure, but i feel like it would be much harder to really limit it overall like c# could be because of that (there are actually completely independent versions of java!)
then again, oracle could, well, try to do an oracle again
that all said, i'm not really sure how that situation really compares to c#'s, or how the two really compare overall either!