I think Pimax could work with this company to get better refresh rates in their panels
EDIT: or the new DisplayLink DL-8020 chip. Seems capable of 4k 90Hz!
But I don't think curved displays solve the issue of vergence accommodation. They may solve the optical issues that companies like pimax face because you could just use a curved fresnel lens across the entire screen without hybrid optics.
However we need either retinal projection, like in the Avegant Glyph or we need stacked displays like NVidia showed some time back, coupled with light field rendering.
I am not sure if multiple focal planes can be sent to current VR headset to allow us to focus differently on objects that are far vs those that are close. Perhaps with foveated rendering and eye tracking as well as dynamic depth of field this can be achieved.