Fwiw, I would guess, after unity, C++ targeting windows is the dominate approach to game development by a margin. And I see game engines on HN pretty often. Doesn't seem that strange

Note that it's not exclusively targeted to game development, it's just that most companies using Live++ are in the gamedev space. There's no reason not to use Live++ on other non-games Windows applications, and we do in fact have customers outside the games industry.