I think a lot of these have larger marketing budgets than you imagine. I can't fathom the amount of money Microsoft spends promoting its C++ language tools, for example.
Regardless of whether languages other than Java become popular or not because of marketing, I still maintain that popularity and worthiness are not correlated. The majority of people may not eat cow dung, but they certainly don't eat really great pudding. They eat the same so-so pudding everyone else does, and most of them don't realize or don't care that it could be better. You will have nothing to "show" for coming up with a better pudding recipe unless you spend money on advertising, manufacturing, distribution, etc..
As for an example of worthiness, Lisp's advantages have been detailed one metric kerjillion times elsewhere. Macros, conditions, and the MOP are the usual suspects in the case of Common Lisp.