Is there a technical reason for this? Or is it logistical? Surely there’s demand for it, not everyone is buying screens for gaming.
There are several third-party Hi-DPI displays that meet or exceed the lowest pixel density that Apple calls "Retina".
As another commenter mentioned, use https://www.sven.de/dpi/ and go find a monitor with that resolution and screen size. If you figure around 215 ppi or so, you should be golden.
Be aware that there's more difference than you'd think between relative minor pixel density differences, eg 180 PPI and 218 PPI.
The point of a retina display is to have a higher pixel density than the human eye can distinguish (at a certain distance).
There are many displays that have far higher pixel density than the iPhone.
According to the list here https://pixensity.com/list/phone/ there are/were at least 40+ non-Apple phones with higher ppi than the iPhone X
I wish for an iMac display without the Mac… to be used as a dumb monitor. I’m going to pull the trigger on the studio display Apple released yesterday after reading initial reviews.
I'm now using a Arzopa 13.3" 2560x1600 13.3" (227 PPI) from amazon [0] that's been absolutely amazing. 60Hz, 99% sRGB (calibrated), has functional speakers, and gets plenty bright enough. Is also powered easily off of a spare USB port.
It's not full desktop size but I honestly think for the ~$150 I paid getting 2-3 of these is now my default answer. I should probably put two in portrait mode as the plugs are on the side to keep the screens very thin.
I know that's not the normal answer but I'm pretty sold on this.
[0] https://www.amazon.com/Portable-Arzopa-2K-External-Speakers/...
Ex: a 4k in 15 inch format: https://www.amazon.com/15-6-Portable-Monitor-External-Consol...
About 300 dpi, so about 33% better than Apple's retina brand.
Plug the numbers in https://www.sven.de/dpi/ and you get:
> Display size: 12.98" × 8.65" = 112.32in² (32.97cm × 21.98cm = 724.64cm²) at 295.84 PPI, 0.0859mm dot pitch, 87521 PPI²
Actually, it's far better than a retina display: OLED is something not available on macbooks
I have a few, they're a pleasure to use. And I love the integrated battery to travel with a dual screen setup with just a USB-C cable and my laptop!
I’d love to have (say) a 30" 6480 x 4320 (~260 PPI), but that would be almost twice the pixels of 5K and over three times the pixels of 4K.
I also am guessing the tech to support hi-res external monitors still isn't there in a $1000 consumer laptop. I use workstation grade laptops with an external gpu which can support at most 2 24" 4k monitors. I am however unable to find any 4k monitors in that size these days.
27" 5K support on windows is hit or miss, maybe Intel 12th Gen and thunderbolt standards normalize support.
Outside of those, I found the same as OP -- really no good retina screens, and I just don't know the reason. I've been trying some 4K screens at 32" which size-wise is perfect to me, but resolution-wise actually bad. You either set it to native 4K and everything is too small, you set it to "retina @2x" and it's too large, and anything in-between is blurry.
In the end, I gave up and found a 43" screen which I run at a native 4K, which means a PPI of about 102. It's better to get a 40" screen but these screens are old stock.
Here in The Netherlands, there's a great site to compare hardware. When selecting monitors, and filtering for PPI higher than 170, you get basically only Apple, or else the Dell UltraSharp UP3218K that has a ridiculous 280 PPI.
Looks like we'll have to wait till GPUs can do 4K@120 to enjoy good monitors :)
I would love a 4K 24” 144hz screen
A cheap 4k screen on the wall behind my desk is retina enough for me.