For many obvious reasons, the Playstation VR has managed to dominate the virtual reality headset market for the third quarter in a row because Oculus Rift and HTC Vive is destined for hardcore PC gamers with a more expensive price tag.
Sony may not have sensed this but their $400 PS VR even though very expensive from a console viewpoint, it still is the cheapest and the easiest way to setup a VR gaming system. When people could buy the Playstation 4 console for $300 or less, they get the entire setup in less than $1000 with at least a dozen game titles.
In order to make an Oculus Rift or HTC Vive work on a computer, a powerful graphics card that costs over $500 or so is mandatory besides many other hardware components to go with it. Besides, PS VR also has many new games landing in almost every other week.
Meanwhile, HTC Vive has dropped its price to $600 while Oculus is doing the same which helped push some sales. The upcoming and cheaper versions Oculus Go, HTC Vive Focus are expanded to kickstart the PC VR gaming market which is in kind of a slump right now but may spring back with the right kind of games, movies among other entertainment content.