Some next-gen VR HMDs have started to integrate TrackIR technology. The only major point where TrackIR shines is price. Other than that it doesn't compare well

Some next-gen VR HMDs have started to integrate TrackIR technology. The only major point where TrackIR shines is price. Other than that it doesn't compare well to VR. A flat screen, no matter how interactive, can't compare to a VR HMD for all encompassing immersion. TrackIR on its own is also limited entertainment wise. Its most common use case is for sims, while VR is more versatile.