You meant this as a sarcastic response, but literally all VR headsets are just 2 displays, 1 per eye. The same thing is true about audio & ears. If you've got a speaker that you know is dedicated strictly to a single ear, then all you need is 2 speakers to simulate audio coming from anywhere.

It's called HRTF and it's not at all a new technology. All you actually need is stereo headphones to have 3d positional audio.