I pay for games because it's convenient. Most DRM is decidedly inconvenient for me, especially Denuvo-tier DRM. The end result is that if there's DRM, I'm more likely to pirate it or not play it if there's no crack.
One situation it regularly fails is with no internet connection. You download a game on your steam deck, get on the plane, and then it refuses to launch. You can prime it by loading the game while connected, but every now and then it randomly unauthorises itself leading you to regularly get stuck in this situation.
