The opposing viewpoint is that only public resources suffer from tragedies of the common (they become a free-for-all), whereas with private ownership there's us

The opposing viewpoint is that only public resources suffer from tragedies of the common (they become a free-for-all), whereas with private ownership there's usually a natural incentive to make your profit-producing resource sustainable. Of course, it's always more nuanced than that (mining and resource extraction industries are problematic), the ideal is probably somewhere in the middle. So we argue about exactly where it should be :)