Most people buying high-end monitors prioritize high refresh rates over pixel densities.
The products exist but they're not as numerous as I'd expect (certainly not outside of the Apple ecosystem), and it's an eye-watering leap as far as prices go, hundreds of dollars at one end and multiple thousands at the other with very little in between.
I won’t turn down a higher peak framerate if it comes without cost to the rest of the monitor’s functionality of course, but it’s not worth trading anything away for.