Companies barely have enough time and money to keep developing their already existing 10+ yrs old tested and "working" codebases as is, how would anyone switch to a whole new language at this point?
At my robotics company (where I lost so many hours compiling overly-templated code in C++), I was able to convince my boss to start a new small product in Rust (was an internal simulation tool) and it convinced him to let me work on another new product a few month later, also in Rust, on a much bigger scale. He had only ever worked in C++ before, and I guess he doesn't mind to loose hours compiling and fixing memory leaks. But regardless, it worked and now I can work (a bit) in Rust.