The big driver for corporate adoption is that this is probably a Silver Bullet in the sense meant in "No Silver Bullet". An order of magnitude improvement for software engineering.

I think the sort of person who figures they don't need to read the book because the title told them there was a Murder on the Orient Express believes Brooks says that it's just all irreducible complexity, too bad, stop looking. In fact "No Silver Bullet" says nothing of the sort and we would be astonished if, after so much time, literally none were discovered.

There are plenty of domains where Rust makes sense if you could just choose Rust, but probably doesn't make enough sense that you should retrain or even re-hire a whole team. Google spends money training devs who don't know Rust, because it's getting enough value out that it makes sense to do that, your web slinging business running on razor thin margins is probably fine in PHP or whatever and should not buy Rust training.