For server and system code, Swift is mostly competing with Rust and Go, as people consider fast, compiled, type safe languages. If you look at Docker downloads,

For server and system code, Swift is mostly competing with Rust and Go, as people consider fast, compiled, type safe languages. If you look at Docker downloads, Swift has 10M, Rust has 50M, and Go has 1B+. Compared to Go, yeah, it's nowhere close. But compared to Rust, I wouldn't quite call it a bust, and could see teams choosing it for the easier learning curve. So yeah, it's a relatively small niche at this point, but I also think it's fair to say the effort to make Swift a contender on the server has been more than just iOS developers being forced to make web apps.