That's because everyone gets too hyper focused on specs and resolution and there is very little innovation going on in regards to the actual content being shot. Some of my favorite VR scenes to this day are japanese 4K scenes that are censored, not because of the camera quality or resolution of the file, but because of the actress and the scenarios and outfits and buildup and overall story. People always get caught up in the tech rat race and forget what really matters until everyones content starts looking all the same and then everyone wonders why things slow down.
Dont ever forget that most people would rather watch great content in 720p vs crap content in 8k
Try to think outside the box and use VR as your medium while not forgetting that ultimately what matters most is not the camera or tech but what is happening in front of the camera.