I think they have other issues, for example, they have no FFI. I think focusing on the business is actually a pretty decent idea. Trying to make money will force them to focus on things that are important to users and not get distracted bike-shedding on things that I would if I were them (like typeclasses).

We do have an FFI now! https://github.com/unisonweb/unison/pull/6008

It's very recent and we'll be adding more types to it soon, this first PR was just focused on the core machinery. This is in the 1.0 release, btw.

Let us know if you give it a whirl.