TheUn4seenOLED in a PC. Yay for people who only watch movies or play games, horrible for everyone else. My wife got a Thinkpad X1 Carbon with the ridiculously expensive OLED screen. It had Excel's interface permanently burned after three weeks, after three months the screen was, for all intents and purposes, unusable. She usually works for at least 10 hours a day so it might last longer for others, but I'm sure a lot of OLED panels with burned Facebook interface will land on landfills.
It's like with glossy screens, all-glass smartphones and such. They look beautiful on store shelves and turn out to be horrible when you actually use them, but we all know most people buy with their eyes with no input from the brain.

SasquiThat sucks. My Galaxy S7 suffered from burn in after about a year, but it's still quite useable. I've had a Galaxy S9 for over a year now and not a trace. LG and Samsung have continued to improve on OLED lifespan, so hopefully those stories will be a thing of the past.

TheUn4seenThey made improvements, no doubt about that. My Galaxy Note 4 had very visible burn-in in the keyboard area after a few months (I write a lot of emails on the phone), not to mention overall loss of brightness. With the similarly used Note 10+ there are only faint shadows on gray backgrounds. But, with PCs, especially ones used for work, there are a lot of very static elements displayed for hours every day. Even with mitigations like pixel shifting you can't really expect the screen to have a long lifespan, maybe that's why Samsung wants to put them on "lifestyle" type devices which will not only see less usage, but also probably much more dynamic one, like watching videos or casual gaming.
Personally I would rather see micro-LED type screens, but they're more than likely a few years away from consumer market.