I'm reminded that Blackboard provided educators with a kind of kick-in-the-pants as well, and I think part of the result was the advent of open-source Moodle as a viable alternative. IMO for educators, open-source makes a lot of sense. I'm not sure about the status of Open Sim and Croquet, but such alternatives (assuming they are or might one day be alternatives to SL) may get a boost from this kick from LL.