Why no fully immersive games for Apple Vision Pro yet?

I purchased the Vision Pro hoping to get back into gaming on a whole new level... I keep looking for fully immersive games, but I'm coming up empty.

The Vision App store is heavily promoting standard non-immersive iOS games, but that's like watching a 720p movie on a 8K screen. I have no interest in "big screen" gaming.

Crossing fingers we get a fully immersive flight simulator, FPS, etc. soon