I am not sure if at this time the (south) East Asian buyers of ivory care about its provenance (i.e. if it is morally sourced). Do tusks have DNA anyway? Maybe in the future they will (care about sustainable sourcing). Why not farm elephants? People have farmed Rhinos and stockpiled the horns but cannot legally sell them due to prohibition. So wild Rhinos are still poached. Correction I guess it is now legal to sell farmed Rhino horns in SA.

https://news.nationalgeographic.com/2017/08/wildlife-watch-r...