Designing good multi-paradigm languages is very hard. I'm a big fan of Mozart-Oz and Common Lisp, and I think Odersky did a really good job with Scala. In fact, given that Common Lisp is languishing and Mozart was never a serious real world contender, Scala fills in a niche where there are not many competitors. C++, just for some use cases, Julia for others, and .NET.

The fact that many organizations working on massive datasets have embraced Scala proves there are not many alternatives around, sadly.