Mostly because both JavaVM and ErlangVM are solid but Java VM is much more popular.
If you're looking for a technology to run a service focused on privacy and security one of the things to consider is the amount of use and thus testing something gets. In case of Java that's testing in enterprise setting.
If you're looking for a technology to run a service focused on privacy and security one of the things to consider is the amount of use and thus testing something gets. In case of Java that's testing in enterprise setting.