65 inch is too small for a curved screen, regardless of technology. There can be only one person seated in the "sweet spot", all the others will have to deal with a weird watching experience, where the visibility of the side nearer is actually worse than the farther side.
Agree with house70 - there is no way this TV can have a pleasurable viewing experience except the one seeing it dead on center. Further, three years ago a 65" HDTV was huge, but today, that's become just upper-mainstream and common. Finally, paying $4k for a 1080p TV when a year from now 4K TVs will be at or under this price for a comparable size, would be a stupid move.
You know instead of making curved TV's that only YOU can watch and your family suffers...why not try working on monitors!! The market is so little and now is the time to get into it. If I had the $ I would start up my own line and bring what the people want!