Difference with ZL is that there are many routes where they have no competitor and that are subsidised to ensure there is a service,
Well if you take the WA routes for example, REX is the only operator on their routes as they are state government controlled by a tender process. If REX stopped flying, at least three other companies could fly those routes. The rub is why would they commit to expanding when the government is throwing money at REX to calm the waters for the election.