Yes, but niches are comfort zones and can be attuned to musical ability. For example, I am very comfortable and adept at playing bluegrass, but as much as I might like to listen to gypsy jazz, I do not have a real feel for playing it. I know others who are strictly solo players and realize that is their niche. They are horrible when it comes to playing with others.

Personally, I think it is fine to be somewhat versatile in many areas, but even more so to be an expert and play with a passion in a specific one.