* Amazon S3, Lambda and Fargate backends are written in Rust
* Microsoft Windows is actively shipping Rust code in both the kernel and userspace
* Android also ships Rust, and Google is writing some new components / has rewritten some older components in Rust
* The Linux kernel is getting new drivers written in Rust
* Much of the core infrastructure at Discord and Dropbox is written in Rust
* Cloudflare and Facebook have adopted / are adopting Rust in some of their critical systems
* The Disney+ client application is written in Rust
* Volvo is using Rust in their entertainment system
It's beyond the point where you can consider it an irrelevant internet fad language, or a self-contained bubble. There's shallow but meaningful penetration across a pretty wide swath of industries, including some fairly conservative ones, in places where it is very likely to "stick" for a good long while.
Surely you're not going to argue that Amazon, Microsoft, Google, Facebook, Cloudflare, Disney and Volvo don't have money on the line.