Clustered JMX

I'm a little surprised that it's taken until Java 7 to seriously consider how to address JMX in a Cluster. This seems like something that a lot of people would have to be dealing with regularly. I'm trying to discern what this means:

1. People don't use JMX much.
2. People who do a lot of clustering don't use JMX to manage their running applications.
3. Everyone who clusters and uses JMX invests a fair amount of time into deploying a solution like OpenDMK.

Thoughts?