Cost is still a big factor - you need fairly decent hardware (minimum GTX 970 / RX 480) for an acceptable experience on Vive/Rift, and we're still a generation

Cost is still a big factor - you need fairly decent hardware (minimum GTX 970 / RX 480) for an acceptable experience on Vive/Rift, and we're still a generation away from that performance hitting mainstream price points (generally nVidia's x50 range is considered mainstream, and next year's, let's call it the 2050, will probably be around GTX 970 performance). Even once you have the hardware, you need the space, and you need to decide to spend $500USD on a less-versatile HMD rather than a high-framerate gaming monitor. For me, space is the hangup - my main PC has the grunt, but I share the space with another PC on another desk, and that takes up all the floorspace. The cost of getting more space makes the cost of PC hardware look trivial....