At the moment it has something very valuable those languages don't have: A lack of Generics. Once they add Generics it will just be competing with those languages on the same turf.

It might not be for you, you may rely heavily on Generics in your daily work flow.

If I need generics in my work, I reach for Rust or C++. But when I want to write an easily maintainable microservice that's not trying to reinvent the wheel or need some clever datastructure to handle the work, I reach for Go, since that is what it's good at (at the moment).