That's a point I was trying to make multiple times - that C (apart from O/S code and drivers) is used for small command line utilities and language runtimes of higher-level languages. Nobody (except maybe game devs) wants to develop fat application server binaries or other long running server apps in C++ or other non-GC'd environments (due to memory fragmentation issues alone if not other things). And for a language runtime, you can't use Rust's memory safety guarantees either. This leaves Rust for what it was originally invented - browser engines and fat desktop apps.