China is capable of doing this now that they have wrenched themselves out of poverty. Africa has hardly even begun to make significant progress and that is largely a prerequisite for these conservation programs to be functional. They need both capital and strong rule of law to enforce it.

Poaching and black markets are quite effective in dysfunctional states and/or places with questionable ethical bases of cultures in regards to animal exploitation (traditional justifications, deprioritization towards longstanding human issues, rerouting of funding to corrupt officials, etc, etc).

Hopefully Congo and other surrounding countries manages to deal with this problem. Gorillas are some of the most interesting and intelligent animals on the planet and heavily relevant to us understanding our own human history.

Maybe there aren't many people like Jane Goodall left with influence in the local governments to protect them like in the old British colonial days. I remember reading how she married a local politician who invested quite a bit in creating large Gorilla habitats.