I think that's normal for statically typed languages. You prototype and move quickly in dynamically typed language, then you can stabilize in a statically typed language.

You can still ship quickly and often in rust, it just depends on what you're doing and of course who's writing the code. I mean, look at the guys that made MakePad. It's still a startup and they have made something quite impressive in Rust. Watch their presentation from this year.