It is entirely plausible the virus emerged from "wet markets" in the Hubei Province of China rather than as a fumbled (or worse, intentionally released) bioweapon cooked up by the Xi Jinping government.
We may never know, of course. But easy or readily apparent answers to the question of how this could have been avoided should be viewed with the skepticism appropriate to any state propaganda. Crises of all kinds, whether economic, political, military, or health, send ideologues scrambling to explain how such events fit neatly into their worldview. In fact, political partisans often attempt to paint any crisis as having occurred in the first place precisely because their policies and preferences have not been adopted.
The Wuhan coronavirus seems tailor-made for this. Alarmists who argue for (i) much more robust and comprehensive "public health" measures by national governments and (ii) greater supranational coordination inevitably point to infectious diseases as justification for increased state power over personal medical decisions. Scary and fast-spreading viruses are perfect fodder for their busybody argument that people cannot simply be left to their own devices.