How to harness or divert it is a problem, though advertising imagery is meant to detain you only for seconds. Its near subliminality is designed to approach the state of a dream. Surrealists like Louis Aragon in Paris Peasant or Andre Breton in Mad Love described their forays, into the city. Or perhaps, 'semi-architectural' would describe them better. Most of all, it resembles a tent with the flap open.
Occupiers look out watchfully.
Artworld denizens may not approve. That they choose to operate within a set of restrictions of their own is one reason and a fair one. That they never concentrated hard enough on the argument behind this reasoning or that they are ignoring attacks is somewhat less defensible. But their nervousness about the streets as a site is understandable. And thoroughfares belong to the people.