The problem is that DD is DIFFERENT. So not all existing stuff maps perfectly. But if people can avoid screaming "That is slightly different, irrelevant!" for a moment, consider a food court/cafeteria style restaurant.
You go up, you get the food you want, you pay. You can stay as long as you want while you eat. Hell, you can stay there for a few hours afterward and they probably won't care too much. But if you make a fuss or they shut down for the night/forever, you have to leave.
Now let's say that you are thrown out for being an asshole. All your food is on their plates and you were using their silverware, so they have to take that away. And unfortunately, you don't have a plate or silverware with you so you can't realy take your un-eaten pork chop.
Like I said, it isn't a perfect mapping (and is mostly a thought exercise that I am sure people will refuse to acknowledge because it isn't exactly the same thing :p), but it does provide a precedent for this kind of stuff. In fact, a precedent that most people wouldn't take too much issue with.