In many (most?) cases, you do not need the performance (which is why people use C#, Java, etc.).
When the performance is needed, the burden of using C++ seems like a small price to pay[0], but a lot of the time, the expressiveness offered by C# or Java, etc. is entirely sufficient. Which is why "enterprisey" software is dominated by Java or .Net, and why certain software like Autodesk Inventor 3D is written in C++.
[0] Which is why browser engines, etc., are written in C++. Maybe one day Rust will replace C++, but for the time being, C++ is the top of the abstraction/performance pyramid.
When the performance is needed, the burden of using C++ seems like a small price to pay[0], but a lot of the time, the expressiveness offered by C# or Java, etc. is entirely sufficient. Which is why "enterprisey" software is dominated by Java or .Net, and why certain software like Autodesk Inventor 3D is written in C++.
[0] Which is why browser engines, etc., are written in C++. Maybe one day Rust will replace C++, but for the time being, C++ is the top of the abstraction/performance pyramid.