I've started Rust a few months ago, because it sounded interesting and distinct enough so I decided to add it to my tool belt. So far, I've completed a few chapters from the official book.
But I work with C++ developers who are adamantly opposed to taking a jump because rust is harder for them to grok (as they suggest that they have to unlearn patterns).
Rust feels like a well designed language and ecosystem so far and I think it learned the lessons where other have failed.
Many, many companies, including big ones, are using Rust in production. They don't need to re-write things.