There's VR and then there's VR, Cardboard was limited to 3DoF head tracking with a single button for input, which is not even remotely comparable to what we thi

There's VR and then there's VR, Cardboard was limited to 3DoF head tracking with a single button for input, which is not even remotely comparable to what we think of as VR today. Full 6DoF for head and hands has been table stakes for a long time, that's what you need to make something like Beat Saber or HL:Alyx work.