[fillest]

I think, the problem is: the production of languages (and libraries especially) is way too much market-driven, there is too little cooperation, too little time spent to polish and to model at least some major use cases. Also the quality of education is too poor, too focused on time-to-market - it makes harder for non-seniors to understand e.g. complex type systems (which are required for more usable languages anyway).

A language is released too prematurely -> some companies start to use it -> design problems become clear, but the language is in a compatibility trap at this stage -> e.g. it becomes a swamp or it slowly becomes a monstrosity of design afterthoughts and crutches.

It probably even wouldn't require much more spending from corporations, only some initiative. They anyway already invest considerably in language&toolchain development, but often with wasteful goals.