Running around in my favorite virtual world, Second Life, you will rarely see something that you would not recognize immediately. Granted: there are flying people, flying cars, impossible buildings. You see people which look like superheroes, wizards, robots, sexy vampires or furry animals. But nearly everything is "familiar". Clubs are walled buildings, boring outside and glaring on the inside. Cars look like cars, shops look like shops and cinemas like ... cinemas. And the houses contain stairs (even though avatars can fly) and chairs (even though no avatar will ever get tired legs). The picture below is a typical shop in Second Life.
This is nothing special when you think about the "real" world, of course. But in a virtual world? Where nearly everything is possible? Why do people cling so tightly to the concepts of our real world?
Some critics would say that it is simply a lack of imagination. I would not say so. Actually it might be a good thing to cling to the ideas of the real world - especially if you are not an artist, but want to easily reach people, with what you create or design; even more so if are a marketeer and want to use a project in a virtual world to target a large audience in the "real" world. Yes, we are talking about advergaming, marketing in virtual worlds, ingame advertising etc. again.
Limiting your imagination a bit might be a good idea, when you are in this industry.