There's not really a market for 5K resolutions due to component cost and the niche use case. For most 4K is enough, which is why only Apple and LG make 5K displays.
And those who insist on 5K always push the "but macOS scaling" meme everytime to justify why they can't just get a 32 inch 4K monitor for much cheaper. Literally everytime.
I hear you. I do.
It's just so sad.