After the industry accepted Java as an enterprise language, lot of development went into optimizing the compiler and these were not academic developments, like

After the industry accepted Java as an enterprise language, lot of development went into optimizing the compiler and these were not academic developments, like your examples (maybe except TraceMonkey). Add this to the already existing huge amounts of libraries and the fact that Java is a perfect middle ground language in every ways, and you have the answer. Personally I don't like Java, mainly because of the 'framework culture', but I have to admit that a lot of progress was done in the areas of compiling and running Java code. Still despite that much effort, I still can feel when I use a non-statically compiled interactive application (e.g. text-editors, games etc.). Generally low latency responses for your actions and fast startup time seems to not to be the property of dynamic languages.