> No one would (should!) ever consider writing a webservice in C++

Depends on what kind of web services you're talking about. C++ is widely spread in game development. It's nice to have the client and server code in the same language, so in game development, C++ web services (including multiplayer servers, if you count that as a web service) are not too unusual.

Two years ago, I even had a customer who wanted me to create a C++ backend for a large website. That was a surprise, of course. But it was fun, it's safe, and it works. You can easily test for safety, and the security logic stuff is just what you have in any other language.