Did you stop to think for two seconds before posting this? People can tell where a sound is coming from in a 3d space. That’s why you can tell the difference between a sound directly in front of you and directly behind you.
I remember being blindfolded in high school science class and testing this by having someone clap two sticks together around my head. Surprisingly difficult to tell if something is in front or behind you.
You can easily create sound in front of and behind you with headphones.
Accurate positional audio from a stereo source is far from easy.
It's even harder with surround setup.
Try playing Rainbow Six: Siege. You can accurately shoot people through walls just by listening to their footsteps.
Positional audio in video games exists and is good. Try playing Rainbow Six: Siege. With the right signal processing you only need 2 sound sources.