I am in agreement to some extent, but at what point do diminishing returns kick in for standard desktop gaming? Will anyone really be able to tell the difference in quality between a 980 and a 1080? Perceptually can humans make a judgement between 50 and 60 fps? Probably not.
However, with VR it becomes more important to have the headroom necessary to maintain the effect. Most important along these lines in not necessarily the power of the tech but its ergonomics. By this I am talking about being tethered to your machine by cables. Two links to look at. The first is from Tom's on two innovations that will mitigate this. Two products, the MSI at the top and further down the Omen by HP.
http://www.tomshardware.com/news/msi-mobile-vr-pc-backpack,31921.html
The second link is from a company in Australia I first read about at CNET last year. This take the idea of laser tag and to some extent paintball to another level. The company has a large warehouse outfitted for wireless VR gaming.
https://www.zerolatencyvr.com/
http://www.cnet.com/news/zero-latency-vr-entertainment-revolution-begins-melbourne-australia/
This way you don't have to worry about crashing around your living room destroying your furniture, lol. If anyone is interested in getting a franchise for this going here, let me know, I'm in.