Are there any market research figures available calculating aggregate investment (worldwide, by region, by country) in the Java platform? This could include software (application servers, IDEs, profiling tools), hardware (Sun servers, bytecode executing processors), personnel (training, books), language development (Java, Clojure, Scala, ..), public/private (universities, governments, corporations), etc.
I'm working on a presentation on JVM languages and would like to illustrate—in some reliable manner—that existing investment in the Java platform is massive and not going anywhere anytime soon (think Cobol). I'm sure this point is clear for IT guys, but I'd like to put a dollar figure on it for the business folks to really drive the point home.
Before the comments start, I recognize that this question is on the outer edge of what most of us consider to be "programming related". Regardless, knowing this information can help many IT department discussions around the future of a platform, and may even assist developers make career decisions.