The recent talk of closing dog parks throughout the Denver area (Denver, Evergreen, Arvada) show that this concept is still valid.
Left to their own devices, people will still exploit commonly held spaces for their own benefit. In our times, it means letting Fido "go" au naturale, and then just going home. Leaving "it" for someone else pick up.
Result, the parks get ankle deep in "it," the creeks get polluted, the parks have to close, and all the dog lovers then go nutz.
Maybe our collective environmental consciousness hasn't come all that far since colonial days.