I've considered it, but can't play FPS effectively on anything over 34" due to biology and $ per sqft of real-estate. The seating position to keep the game in focus would be half way across the room.
OLEDs under 40" aren't TVs and almost all OLED monitors target revenue generating use-cases and are priced to match.
LG sells several 48" OLED TVs. To get the equivalent of 30" distance to a 27" monitor (about 48 degrees FOV), you need to be about 4.5 feet away from a 48" screen.
I just mounted mine to the wall, and the back of the desk is about a foot off the wall.
I have the Gigabyte FO48U, which uses the same panel as the 48" LG C1, and... it's a beautiful TV. That's what I wound up using it for, because I couldn't stand it as a monitor and went back to my old 27". Image retention is still a real factor for computer use, and maximizing a mostly-white window results in this incredibly jarring transition from a screen that's almost uncomfortably bright to one that's too dim.
OLEDs under 40" aren't TVs and almost all OLED monitors target revenue generating use-cases and are priced to match.