From what I've seen it _seems_ the language's creator is not interested in corporate sponsorship. It's been some time since I was interested in Nim, so I don't have any direct references to this claim. A web search would probably provide several examples. It was one of the main reasons why I decided to focus on other languages.
It sits in the sweet spot for projects like nitter--which is not the kind of work that's attracting investment right now, but that's due to markets being a clumsy tool for deciding what should be done and nothing to do with Nim's merits.