This is a pretty egregious misreading of both Hardin and Ostrom, where on earth did you get this from?
Hardin did not argue that private industry was more efficient. His paper described that with an unmanaged, private, unregulated open pasture that has no property rights, individuals will exploit it until it collapses. It wasn't used used as justification for privatization, if anything it was the opposite.
Ostrom did not argue that unmanaged resources don't collapse. Instead, she showed with data a third way of organising which was more involved with self-governing, communal rules to manage shared resources without resorting to either a private corporation or government control.
Hardin did not argue that private industry was more efficient. His paper described that with an unmanaged, private, unregulated open pasture that has no property rights, individuals will exploit it until it collapses. It wasn't used used as justification for privatization, if anything it was the opposite.
Ostrom did not argue that unmanaged resources don't collapse. Instead, she showed with data a third way of organising which was more involved with self-governing, communal rules to manage shared resources without resorting to either a private corporation or government control.