The problem can be better solved by getting the demand under control. China, one of the historic worst offenders, actually managed to do so [1], but Japan's legal market [2] still entices poachers and smugglers (who supply the black market in China [3]).

[1] https://www.worldwildlife.org/press-releases/demand-for-elep...

[2] https://asiatimes.com/2022/05/japan-sends-wrong-message-on-i...

[3] https://us.eia.org/campaigns/wildlife/elephants/japan-ivory/