Probably not, but it would be nice if there was one global language thats suitable for all problems... I'm not sure that its realistic though.
In real life, you're right. It doesn't make sense to try and mash every language together just because. Its also potentially not possible anyway, since theres too many conflicting design decisions - though the ability to mold a language, through powerful abstractions and macros, like Lisp does, does indeed solve a lot of this.