I write music-making software, which is one domain where C++ is utterly dominant and likely to remain so for a long time. In this world you need a language that's fast, gives you fine-grained control of memory, and allows you to operate without ever allocating or taking a lock of any kind. You could also use C for this, and some people do, but I find that the more powerful abstractions C++ provides are very very helpful here.

I think it's unlikely we'll see anything like Chrome, Ableton Live, or Photoshop written in anything but C++ any time soon.