Absolutely. They're not suitable for high FoV like the Pimax 8k has. But for 'normal' FoV 4k display AR/VR's they're most likely really nice. Kopin said that they're solving the problem of small form sizes with custom lenses to get 100 degrees FoV, we'll have to see how well that works out though.
I don't know how pricey they will be, but there's always a market for better display headsets. Remember these are 120 hz OLED's, so very low latency, good crispy colours and brightness.
But of course I agree, it would be even better to have bigger display's. Supposedly that's actually more difficult to produce and that's why Kopin's panels are so small. Their challenge is to make them bigger.
Hoping Samsung will come up with a great 4k OLED panel, would be awesome to have 2 of those in the Pimax 8k !!
@PimaxVR BTW very good to see you participate here on the forums, I'm hoping you keep doing that every now and then !