> The disparity between Rust jobs and C/C++/C#/Java/Golang jobs on Indeed is staggering.

Most of the world are things other than real systems programming. C++/C#/Java/Golang are likely better choices for this than either C or Rust.

But a C-like language is necessary. Rust may be (very slowly) displacing C for systems programming.

As you mention, it takes awhile for the pool of experienced developers to show up.