I don't buy this. You don't 'see' perspective distortion, and you certainly don't want to pre-correct for it. Sure, large flat screens are distorted when projected onto your retina, but this applies to everything you see and your brain sorts it out without fuss and you perceive straight edges and flat surfaces correctly. The reverse is also true. If you look at a curved surface, your smart brain will not be fooled.
There's no arguing with the latter. Yes, we do see perspective distortion all the time but because we live in a 3D world, our brains are trained to correct for the distortion and they are very good at it. Just like they are very good at filtering out raindrops on the car windscreen we look through, or a crack in a window, just like we don't even notice our own nose while looking straight past it the whole day, and we are not distracted by the edges between a two monitor setup.
We can see and navigate perfectly, raindrops or not. Still, if you could choose when buying a new car, would you pick one with a permanently wet windscreen, or a split screen, or a crack in it? Your brain will not be fooled but the larger the screen, the further the corners, the more distracting and annoying it gets.
With 'small' screens of say up to 21" you don't see the distortion, but above 27, 30" you need to take more and more distance to 'keep the horizontal edges straight'.
My 55" UHD TV is curved, but it doesn't make much of a difference because you don't sit right in front of it anyway. At a distance of a few meters, the perspective distortion is negligible. I just wanted this TV for it's other features and nobody even notices the curve when watching video, but it doesn't add anything.
I've been working at a Philips UHD 40" computer monitor for over a year now. I sit about a good arm length away from it. Although I love the huge desktop space, the perspective distortion at the corners is noticeable. Therefore, a curve in large computer monitors is really helpful. It's not a coincidence that the recent update to that monitor does have a slight curve. I even thought about trading in my old one for the curved version, but for that, the curve is too subtle to make enough difference.