Well, in a sense all of the other languages have fewer capabilities. C++ is more or less the only language that attempts to be a bridge between low level and high level programming in one language. I see that as beneficial. Many projects benefit from using both high level and low level programming. The alternative of writing it in multiple languages is not always that nice either. The kind of bridge code that one writes between two languages is often not very nice. Plus, a build that involves one languages is simpler than a build involving multiple ones.