The reason why it's relevant here is that this is not the first time that Oracle has closed-sourced an open-source project bought up from Sun. Oracle seems almost paraconsistent towards open-source in a very interesting way: they seem to view the GPL as a good way to get other companies to help them out without cheating (e.g. OpenJDK), but if they're going to do most of the development in-house anyway it seems they're much more willing to close the source (OpenSolaris, now apparently MySQL).
Could anyone comment on whether there's a larger pattern that I'm missing there? And are there other open-source technologies which were obtained from the Sun buyout which are also in danger which we should know about?