I found this very interesting example on the net of people protesting the privitization of space in San Fran. On the plus their emphasis on habitat for simply relaxing or doing nothing reasserts the use value of space. Unfortunately they decided to use meters for some reason. Although it was most likely a kind of comedic device, it felt like even in their display the naturalization of paying for interacting with space found its way in.
Here is an excerpt:
"One of the more critical issues facing outdoor urban human habitat is the increasing paucity of space for humans to rest, relax, or just do nothing.
For example, more than 70% of San Francisco's downtown outdoor space is dedicated to the private vehicle, while only a fraction of that space is allocated to the public realm."
The website can be found by clicking here.