Everything has just a little dirt or damage. Even that clean office wall has some minor shit. But yes it can be very minimum and it's important to concentrate most of the dirt to the edges. That goes with almost all textures imo. Making a clean texture nowdays also involves a lot from the spec as well of course. But yeah it can be harder to make clean textures. You have to know when to stop and try to add just enough dirt so it won't be too much.
And you will need to pay attention to more subtle details so the texture won't seem too empty.
