"If you were to do it by lines of codes, organizational importance, financial pay off, number of engineers working in a language, or pretty much any metric other than "does ___ use ___ somewhere in their codebase?,"

The flip side of that is that perhaps Java and C++ are huge because it takes more engineers and lines of code to accomplish the same task, and hence the potential financial payoff and organizational importance needs to be higher to justify their use. ;-)