Keep in mind this is a commercial operation. They are probably just happy to have animals in exhibits. Breeding animals is expensive and takes space, so is probably not a priority, at least initially.
True, though as a commercial operation they are no doubt aware there is no better publicity than a baby animal. Taronga always experiences a huge surge in visitation following the birth of tiger cubs, elephant calves etc. Even the offspring of less high profile animals encourage visitors to pause longer at their exhibit and therefore spend more time at the zoo. Not to mention the merchandise sales.
Initially this won’t be an issue. This is a new zoo, opening with a decent species list and people will arrive in the droves; but two or certainly three years down the line, they will need something to draw the crowds and sustain the interest. All of the non breeding species they are acquiring have a life expectancy of at least a decade (some many more), so this is no short term scenario we’re talking about.