i don't think locomotion or haptics problem for vr will be solved before the era of BCI. my reasoning for this position is that not only are the problems presented by locomotion and haptics hard to solve, but they're not a financially profitable venture. for high end VR, the headset is already seen as an accessory for the more mainstream pc gaming. so you're asking consumers to first invest in a 1000-2000$ gaming machine, a vr headset that ranges from (500$-2000$) but now a treadmill and a suit which will be an additional cost. thats a fraction of a fraction of a market that will demand something so niche. and because there is a very limited player base with this niche accessory, are vr developers even gonna waste the resource to implement support? my bet is on no. to solve the problems of haptics and locomotion, will require huge levels of funding's and a team of veteran engineers to tackle the problems ahead. yet there is no consumer apatite large enough by mainstream appeal to gain the investment required for these problems. futhermore, once BCI technology reach a level of maturity it will surpass anything haptics and treadmills can offer, by offering true full dive. you're never gonna be able to feel water on your skin, or taste the virtual food on your tongue with haptics. you will with a BCI. so do I think you'll be able to buy a haptic suit or a treadmill, yes, there already available today. are they any good. no, and it'll never reach mainstream adoption before BCI becomes available