1. C-based lineage
2. Designed for industry use
Haskell has become the "nights and weekends" language. People are using it on pet projects outside of work and they're arguably becoming better programmers for having done so. Rust though is in the C family of languages, for which nearly every developer has familiarity, and was designed for larger project teams to collaborate and maintain large projects. Add in Rust's memory management strategy and it's not requiring a VM (unlike Java/C#) so it runs fast in a Docker container and you have a winner.
To me a more interesting question to ask, because the answer isn't nearly as clear-cut, is whether Rust or Go will be used more in industry?
However, I personally am against the idea that it is a good idea to solve your problems by giving a restrictive tool to large groups of mediocre programmers. Rather, I like the smaller, smart teams approach, which is what both Rust and Haskell fit much better.
If by 'used more' you mean that more people will use it, then Go will undoubtedly win because it has a much lower learning curve because there is just not a lot to learn. However, I do not think that Go will allow as innovative solutions to be created as Rust or Haskell do.
My guess: Rust.
Why you should believe my guess: Rust seems to be growing faster than Haskell.
Why you should not believe my guess: I'm primarily in the embedded space, where Rust fits well with the problems I'm used to having to solve. Haskell? Not so much. This makes Rust appear much more generally useful to me, when it may only be more useful in my specific area.