Before revision: Public goods are often either over-consumed in the absence of regulatory mechanisms, or remain completely unused, as in the case of the Covid-19 pandemic, where social distance constraints are enforced to limit the number of people who can share public spaces.
After revision: Public goods are often either over-consumed in the absence of regulatory mechanisms, or remain completely unused, as in the Covid-19 pandemic, where social distance constraints are enforced to limit the number of people who can share public spaces.