Dense built environments do have a minor problem: everywhere you set foot, it is likely that someone has some sort of interest in keeping a certain aspect of the environment in place. One learns to ignore one's environment, or at least what is not pertinent to one's own personal efficacy at the moment. And one anxiously learns to follow the rules, as the constant upsetting of surrounding interests takes its toll psychologically and socially.
To create and manipulate one's environment, one must fight for the social power to do so, achieve the social power required to fulfill one's aims.