The other catch is that those displays are built for heavy duty use, not for picture quality, and as such aren’t going to look as good as even a budget consumer OLED TV.
Hotel TVs, same panels as consumer models with different supporting hardware and stock calibrations. These are actually dimmer than the consumer models to increase panel longevity.
They tend to lack gaming features like high/variable refresh rate but they're more functional as normal TVs than digital signage displays.
They have similar OSes as the consumer models and can run the same apps but don't have ads unless the operator wants them to and can be centrally managed, support internal IPTV networks, etc.
If you get the crap ones, they will look crap.
However any of the midrange ones will be brighter than the equivalent consumer (they have to operate in full sun 24/7)
You will not find an oled though, because they have yet to be full duty cycle (well I've not looked, but if they do exist, they will be many monies.)
Get yourself a nice NEC 4k, you'll be happy. unless you want 8k (good luck finding a source for the 8k) or you really like the motion smoothing of poorly setup consumer TVs.