In Hare's defense, not every programming language needs to target every runtime/OS/environment.
JavaScript only targets the browser. Shaders usually targets one graphic runtime. Maybe there is a space for a language that just targets a few OSes, or even just one? Remember that both C# and Swift initially just targeted one platform, so maybe it does makes sense to now have one OSS language for OSS nerds.
While that was true for years, Node.js has made JavaScript viable on the server for quite a while. But I agree with your overall point. I think JS and C# are good examples of languages that were seen as valuable enough to start using in other environments. I love C#.
JavaScript only targets the browser. Shaders usually targets one graphic runtime. Maybe there is a space for a language that just targets a few OSes, or even just one? Remember that both C# and Swift initially just targeted one platform, so maybe it does makes sense to now have one OSS language for OSS nerds.