High-level Programming Languages allow for thinking abstractly - on a high level of abstraction - about solutions for problems to be solved by computers.
Mere library with extra semantics (meaning, use cases) for a language is often not enough, because elegant syntax (grammar, keywords) allows for simpler thinking, for acquiring paradigms (ways of perceiving & thinking), for acquiring idioms (good practices), for easier understanding of complex tricks & their use, for easier & faster coding.
With fewer lines of code there's less errors, programs are written, understood & maitained faster.
When reality changes, companies have to adapt & rewrite software quickly - preferably before competition releases their own competing products or services - high level programming languages are tools that give companies this advantage.
'Ola AH' Programming Language is fairly general-purpose language, but has found it's niches as well.