Comment by pjmlp

The only places where C++ failed to take C's crown has been on UNIX clones (naturally, due to the symbiotic relationship), and embedded where even modern C couldn't replace C89 + compiler extensions from the chip vendor, many shops are stuck in the past, even though most toolchains are already up to C++20 and C17 nowadays.

Rust is still too new for many folks to adopt, it depends on how much you would be willing to help grow the ecosystem, versus doing the actual application.

It will eventually get there, but also have the same issues as C++, regarding taking over C in UNIX/POSIX and embedded, and C++ has the advantage of having been a kind of Typescript for C, in terms of adoption effort, being a UNIX language from AT&T, designed to fit into C ecosystem.