As someone who has been searching for a Rust job lately, few rust roles are
only Rust. Many are Rust + another niche domain.
- Must have 5 years of Rust and 8 years of embedded experince
or
- Must have 5 years of Rust snd 10 years of writing SQL engines.
or
- Must have 2 years Rust experience and 5 years with Linux kernel development.
etc...
If you are looking to hire someone with specific domain experience, it makes more sense to compromise on the Rust language side of things. A developer can learn Rust on the job, but it is harder to learn to write a production SQL engine on the job. But that means you aren't hiring Rust devs.
Developers who just specialize in Rust are behind their peers who are domain experts when it comes to looking for a job.
IMO that means Rust will "win" not when a bunch of undifferentiated developers learn Rust, but when the domain experts learn Rust. e.g. Kernel maintainers.