Obviously the issues are timely. In the interest of a discussion--let us look at the various "commons" that have been exploited to the point of collapse.
The ecosystem for certain,
Of course the atmosphere in general. . .but also.
The economy, where it is in everyone's interest develop new buisiness, hence oversaturating every market. . .
In relationships between people, where the "common" responsibility and good will is often taken for granted and exploited.
In one's personal health,
Indeed in one's mental health. . .
Perhaps the greatest ethic we can hold up at this moment in history is "restraint?"